Tag Archives: Evidence

Lawrence Krauss debates “A Universe From Nothing” with an astrophysicist

Two horses fight it out, may the best horse win!
Two horses fight it out, may the best horse win!

Dina sent me news of an exciting episode of Unbelievable, which features Lawrence Krauss, who debated William Lane Craig. Krauss’ book was also reviewed in the New York Times.


Lawrence Krauss is a Cosmologist at Arizona State University who describes himself as an “anti-theist”. His latest book “A Universe From Nothing” has received both acclaim and criticism for its attempt to answer the question “Why is there something rather than nothing?” Debating the issue with Krauss is Rodney Holder, Course director at the Faraday Institute, Cambridge. An astrophysicist and priest by background. In a lively exchange they debate whether Krauss’ “nothing” is “nothing”, fine tuning and multiverses, scientific knowledge, miracles and the usefulness of theology and philosophy.

This debate is quite entertaining, and do not be intimidated if your don’t understand science. You can understand pretty easily who is arguing based on facts and who is speculating about unobservable, untestable entities. At one point, Krauss actually denies that there is any fine-tuning in the universe, so please see this link to refute that claim as well as this podcast which explains some examples of fine-tuning. Krauss gets a bit angry at the beginning, but calms down.

Quotation marks are for direct quotes, italics is for made-up snark. See below the summary for more posts that are related to this one.

Summary of the discussion: (picked up at 9:30 when they start talking about the book)


  • explain your theory of how the universe can come into being from nothing


  • the nothing that preceded the universe is “no space, no time, no universe”
  • theists say that God is responsible for creating the universe out of this nothing
  • but the laws of nature can create the universe uncaused out of nothing


  • Krauss sometimes writes that the nothing is really a quantum vacuum, but that is not nothing
  • He even acknowledges in his book that a quantum vacuum is not nothing
  • He thinks that the nothing has properties, even though it has no being
  • It has the property of being unstable
  • It has the property of being acted on by quantum fields
  • It has the property of being acted on by gravity


  • But nothing can have the potential to do things inside it
  • For example suppose you have an electron, which is not nothing
  • If it jumps from one level to another, it emits light
  • There was no potential for the light in the electron, but it was there as part of atomic structure


  • But in cases like that, there is something physical that has the potential
  • Well, how did God makes the universe then if it had no potential?


  • God existed, and the potential for creating the universe in himself


  • It was written by a philosopher, so I dismissed it


  • These book reviewers have not even read my book!


  • Science will be able to figure out how to make something from nothing in the future
  • We are even now speculating about interesting questions, like is there a multiverse?


  • Consider the critical review of your book in the New York Times
  • The author of the review claims that you equivocate on the term “nothing”
  • In order to get things to pop into being, you have to make “nothing” mean “something”
  • Reviewer: none of Krauss’ theories explain how something can come from actual nothingness


  • In physics, something and nothing are not that different
  • The reviewer doesn’t understand the physics
  • He doesn’t understand quantum field theory
  • You could call a quantum vacuum “nothing”, (this is the vacuum fluctuation model, refuted by William Lane Craig in a peer-reviewed publication in an astrophysics journal – get the full text of the article here)
  • Maybe there is an eternally existing multiverse that we can’t observe or test scientifically
  • Maybe it has laws that we don’t know about which allow our universe to pop into being
  • Maybe this popping into being is uncaused
  • (alarmed) Who made God? Who made God?


  • God is eternal and necessary


  • (interrupting, angry) What does it mean for something to be necessary?


  • Basically, you have to decide whether there is more evidence that the necessary being God or a multiverse


  • So Dr. Krauss are you willing to say that the universe is a brute fact, in some sense, and requires no explanation


  • (angry) Religious people are stupid because they just assume brute facts, not like me and my unobservable, untestable multiverse
  • (angry) Religious people are against the progress of science, they don’t want to figure out how things work


  • But isn’t it possible that naturalists can be opposed to the progress of science?
  • What about the way the Fred Hoyle opposed the Big Bang because he wanted an eternal universe


  • (angry) But naturalists like me let the facts determine our beliefs, like the facts about the eternal unobservable, untestable multiverse
  • (angry, shouting) Philosophers are stupid, they know nothing!

=== Break ===


  • Do you see any evidence of purpose in the universe?


  • Well maybe I would believe if the stars lined up to spell out a message from God


  • Actually no, that wouldn’t be evidence for God on your multiverse view
  • if there an infinite number of universes existing for an infinite amount of time, then anything can happen no matter how unlikely it is
  • therefore, no evidence could convince you that God exists, since the unobservable, untestable, eternal multiverse can make anything it wants


  • That’s a true statement, and very convenient for atheists who don’t want to be accountable to God, don’t you think?
  • Back to the multiverse, how does it solve the fine-tuning?


  • “We have no idea if the universe is fine-tuned for life”, even though the atheist Martin Rees who endorsed Krauss’ book wrote his own book about the fine-tuning of the universe called “Just Six Numbers”
  • Inflationary theory does suggest a way to create multiple universes, (this is the chaotic inflationary model, refuted by William Lane Craig in a peer-reviewed publication in an astrophysics journal – get the full text of the article here)


  • But this theory is still very much a hypothesis, isn’t it? We can’t observe or test this hypothesis can we?


  • “No, and that is really important to state”
  • “I’m an empiricist, so if you can’t falsify it and if you can’t test it then it’s not science”
  • In my book, I speculate about a way that we could test the multiverse theory


  • Yes, in principle, the multiverse would be scientific if you could test it through other theories like inflationary theory
  • There are a lot of speculations about multiverse theory, but no evidence from predictions that were validated in the lab


  • “I agree completely with everything you just said”


  • Roger Penrose agrees with Holder that the multiverse theory is too speculative
  • (To Holder) Isn’t the multiverse theory better than positing a completely different kind of being, which is God?


  • The multiverse theory is extremely speculative
  • Even if the multiverse were true, you would still need to explain the multiverse


  • People don’t oppose my book because it’s full of self-contradictory speculations
  • People oppose my book because they are stupid and ignorant


  • There are things that exist that science cannot measure, like objective morality
  • It’s possible to give explanations for moral behavior by appealing to evolution
  • But that does not ground self-sacrificial morality, such as what occurs in the Christian life


  • Dawkins says there is no purpose or morality in in the universe, do you agree?


  • “There is certainly no evidence of any of that”


  • In the book, you talk about how we live in a special time in the universe’s history to be able to do science, (i.e. – The Privileged Planet hypothesis)
  • You also write about how all the discoveries were are making will not be communicated to anyone in other places in the universe
  • So what is the meaning of doing science on your view? And why are you sad at the knowledge that will not be available to people in the future?
  • Are you longing for some kind of purpose?


  • No, I just get enjoyment from studying the universe with science to gain understanding


  • What do you make of Einstein’s statement about the unexpected comprehensibility of the universe
  • Theists would say that this is because God wanted us to study and understand and gain knowledge


  • “It is remarkable that the universe is comprehensible”


  • Why is the universe comprehensible?


  • Well, maybe the universe just has to be that way


  • What do you make of the heat death of the universe, when all life in the universe will die out?


  • That’s the way the universe is
=== BREAK ===


  • I wouldn’t want to live in a universe where there was a God
  • God is a cosmic Saddam Hussein
  • “Religious people turn their minds off” and believe in God for consolation


  • First, Jesus is the revelation of God and he is no Saddam Hussein
  • Second, the Christian life is anything but easy, we are facing some persecution already in the UK
  • Third, there is also the problem of being accountable to God when we die
  • It’s very much like science – Christianity is the way it is, not the way we want it to be


  • “If you don’t believe in him, you don’t get any of the benefits, so you have to believe”
  • “And then if you’ve done something wrong, you’re going to be judged for it”
  • “So I don’t want to be judged by God, I want to be… that’s the bottom line”


  • Well, Jesus has died to pay the price for those things we’ve done wrong
  • Although we will have to face the charges for what we’ve done, believers will ultimately be forgiven

Finally, Peter Sean Bradley note that Krauss is now walking back his rhetoric in response to criticisms from people like atheist John Horgan.

Related posts

Did Jesus appeal to evidence when reaching out to skeptics?

Investigation in progress
Investigation in progress

From Eric Chabot of Ratio Christi – Ohio State University.

He lists eight ways that Jesus makes his case.

Here’s one of the ways:

2. Jesus Appealed to Evidence

Jesus knew He could not show up on the scene and not offer any evidence for His Messiahship. In his book On Jesus, Douglas Groothuis notes that Jesus appealed to evidence to confirm His claims. John the Baptist, who was languishing in prison after challenging Herod, sent messengers to ask Jesus the question: “Are you the one who was to come, or should we expect someone else?” (Matt. 11:3). This may seem an odd question from a man the Gospels present as the prophetic forerunner of Jesus and as the one who had proclaimed Jesus to be the Messiah. Jesus, however, did not rebuke John’s question. He did not say, “You must have faith; suppress your doubts.” Instead, Jesus recounted the distinctive features of His ministry:

“Go back and report to John what you hear and see: The blind receive sight, the lame walk, those who have leprosy are cured, the deaf hear, the dead are raised, and the good news is preached to the poor. Blessed is the man who does not fall away on account of me.” (Matt. 11:4-6; see also Luke 7:22).

Even in the Messiah Apocalypse, which is dated between 100 and 80 B.C.E mentions a similar theme as seen in Matt.11: 4-6: “He [God] frees the captives, makes the blind see, and makes the bent over stand straight…for he will heal the sick, revive the dead, and give good news to the humble and the poor he will satisfy, the abandoned he will lead, and the hungry he will make rich.”

Jesus’ works of healing and teaching are meant to serve as positive evidence of His messianic identity, because they fulfill the messianic predictions of the Hebrew Scriptures. What Jesus claimed is this:

1. If one does certain kinds of actions (the acts cited above), then one is the Messiah.
2. I am doing those kinds of actions.
3. Therefore, I am the Messiah.


5. The Miracles of Jesus

In the Bible, miracles have a distinctive purpose: they are used for three reasons:
1. To glorify the nature of God (John 2:11; 11:40)
2. To accredit certain persons as the spokesmen for God (Acts 2:22; Heb. 2:3–4)
3. To provide evidence for belief in God (John 6:2, 14; 20:30–31). (3)

Nicodemus, a member of the Jewish ruling council, the Sanhedrin, told Jesus, “‘Rabbi, we know you are a teacher who has come from God. For no one could perform the miraculous signs you are doing if God were not with him’ ” (Jn. 3:1–2). In Acts, Peter told the crowd that Jesus had been “accredited by God to you by miracles, wonders and signs, which God did among you through him” (Acts 2:22).

In Matthew 12:38-39, Jesus says, “A wicked and adulterous generation asks for a miraculous sign! But none will be given it except the sign of Jonah the prophet.” In this Scripture, God confirmed the Messianic claim when Jesus said the sign that would confirm his Messiahship was to be the resurrection.

It is important to note that not all witnesses to a miracle believe. Jesus did not do His miracles for entertainment. They were done to evoke a response. So perhaps Paul Moser is right on target in what he calls “kardiatheology” – a theology that is aimed at one’s motivational heart (including one’s will) rather than just at one’s mind or one’s emotions. In other words, God is very interested in moral transformation.

We see Jesus’ frustration when His miracles did not bring the correct response from his audience. “Even after Jesus had done all these miraculous signs in their presence, they still would not believe in him” (John 12:37). Jesus himself said of some, “They will not be convinced even if someone rises from the dead” (Luke 16:31). One result, though not the purpose, of miracles is condemnation of the unbeliever (cf. John 12:31, 37). (4)

I am forever pointing this out to people. Jesus didn’t get people to follow him because he was nice. And he didn’t just talk to people who agreed with him. He even promised “a wicked generation” his resurrection as evidence for his claims. He called his resurrection “the sign of Jonah”, and it was meant for people who were looking for a “sign”. This is the way we should be – using whatever evidence we can dig up from science, history, law, and even the social sciences (when arguing moral issues).

Read the rest here. Surprise! Jesus loves to convince people, and not just by quoting the Bible to people who already accept the Bible, either. His goal was not to make people accept his claims because of their feelings, but because of the evidence he offered them.

What got me started on apologetics? William Lane Craig debate transcripts

William Lane Craig lecturing to university students
William Lane Craig lecturing to university students

Yes, William Lane Craig debate transcripts. In fact, I still read them from time to time to keep up my skills.

Here’s one of my favorites, the Craig-Nielsen debate on grounding morality without God


William Lane Craig and Kai Nielsen
with annotations by William Lane Craig
February 1991, University of Western Ontario

Best part:

Finally, he raises the issue of immortality and says, “Death doesn’t undermine moral values. In fact, things that we value become all the more precious.” Well, in one sense he’s right. It’s the absence of God that undermines the objectivity of moral values, not death. But let’s suppose that there are objective moral values. What would be undermined by the lack of immortality? I think two things.

First, I think there would be no reason to adopt the moral point of view. Since you’re going to die, everyone ends up the same. It doesn’t make any difference whether you live as a Hitler or a Mother Teresa. There is no relationship between your moral living and your ultimate fate. And so in that sense, death undermines the reason for adopting the moral point of view rather that just being an egoist and living for self.

Second, there’s no basis for self-sacrifice on this point of view. Why should an atheist, who knows everything is going to end in death, do things that are morally right that go against self-interest? For example, a few years ago there was a terrible mid-winter air disaster in Washington, DC, as a plane crashed into a bridge spanning the Potomac River, spilling its passengers into the icy waters. And as the helicopters came to rescue these people, attention focused on one man who again and again passed by the rope ladder rather than be pulled to safety himself. Seven times he did this, and when they came again, he was gone. The whole nation turned its eyes to this man in respect and admiration for the noble act of self-sacrifice that he did. And yet on the atheistic view, that man wasn’t noble. He did the stupidest thing possible. He should have gone for the rope ladder first, pushed others away, if necessary, in order to survive! But to give up all the brief existence he will ever have for others he didn’t even know? Why? It seems to me, then, that it’s not simply the absence of God that undermines objective moral values, but ethical living is also undermined by the atheistic point of view because you then have no reason to adopt the moral point of view and you have no basis for acts of self-sacrifice.

By contrast, on the Christian view, where you have both God and immortality, you have the necessary presuppositions for the affirmation of objective moral values and for consistent living of the ethical life.

And another of my favorites, the Craig-Taylor debate on the ontological grounding of morality.


Is The Basis Of Morality Natural Or Supernatural?
Richard Taylor and William Lane Craig
October 1993, Union College, Schenectady, New York

Sample Craig:

(2) I argued that moral accountability also exists under the supernaturalist view, and Professor Taylor didn’t deny the point.

(II) What about my critique, then, of naturalism? I said that naturalism doesn’t provide a sound foundation for morality, and here I made two points:

(1) On the naturalist view, objective right and wrong do not exist. Again, Professor Taylor doesn’t deny this point; he just says, “Well, to say that they’re conventional doesn’t mean they’re contemptible.” Well, granted; but it does mean they’re arbitrary, they’re non–objective. There’s no more difference between moral right and wrong than driving on the right–hand side of the road versus the left–hand side of the road. It’s simply a societal convention. And the modern evolutionist thinks these conventions are just based in socio–biological evolution. According to Michael Ruse, a professor of the philosophy of science,

The position of the modern evolutionist…is that humans have an awareness of morality…because such an awareness is of biological worth. Morality is a biological adaptation, no less than are hands and feet and teeth…. Considered as a rationally justifiable set of claims about an objective something, [ethics] is illusory. I appreciate that when somebody says, ‘Love thy neighbor as thyself,’ they think they are referring above and beyond themselves…. Nevertheless…such reference is truly without foundation. Morality is just an aid to survival and reproduction and…any deeper meaning is illusory….{26}

This is essentially the same view as Professor Taylor’s. Moral values are simply rooted in socio–biological evolution, that have passed down as certain taboos and certain commands, but they have no objective validity in terms of their moral rightness or wrongness. Professor Taylor says, “But I have a high regard for people who are truly moral and decent.” I don’t deny that. Of course he does! But the point is that in his ethics, in his philosophy, he has no basis for that affirmation. What I bring is not a new set of values—I think we pretty much hold those in common—but I’m offering a secure foundation for those values that we all want to hold dear.

You see, on Professor Taylor’s view, there really isn’t any objective morality. I think every one of us here tonight would agree that it’s wrong to kill babies and that the holocaust was morally wrong. But in his book Professor Taylor says, “The infanticide practiced by the Greeks of antiquity did not violate their customs. If we say it was nevertheless wrong, we are only saying that it is forbidden by our ethical and legal rules. And the abominations practiced by the Nazis…are forbidden by our rules, and not, obviously, by theirs.”{27} I submit that that is simply a patently false view of moral values and that naturalism, therefore, can’t provide any objective basis for right and wrong.

And another of my favorites, the Craig-Tooley debate on the problem of evil.


A Classic Debate on the Existence of God
Dr. William Lane Craig & Dr. Michael Tooley
November 1994, University of Colorado at Boulder

Sample Craig:

(2) Christian doctrines increase the probability of the coexistence of God and the evils in the world. Let me just mention a couple of these.

(i) On the Christian view, the purpose of life is not happiness as such in this life. Rather it is the knowledge of God—which will ultimately produce true and everlasting happiness. What that means is that many evils occur in this life which might be utterly pointless with respect to producing human happiness. But they might not be pointless with respect to producing the knowledge of God. Dr. Tooley assumes when he talks about changes that would make this world a better place, that the purpose of life is basically to be happy in this life. And I certainly admit that you could make changes that might appear to make this life a better place, make it happier. But that’s not God’s purpose. So if you understand that the purpose of life is not happiness as such, I think that you can see that the existence of evil doesn’t necessarily cast any improbability upon God’s existence.

(ii) It’s also the Christian view that God’s purpose spills over into eternal life. In the afterlife God will bestow a glory and happiness upon us that is incomparable to what we’ve suffered here on earth. And the longer we spend in eternity with Him, the more the sufferings in this life shrink by comparison to an infinitesimal instant. Dr. Tooley admits in his article that it is possible that immortality could justify such evils. But, he says, it’s “very unlikely” that there is life after death. Well, I have two comments. First, I’d like him to prove that it’s unlikely that there is life after death.{26} Second, I suggest that the resurrection of Jesus gives us grounds for hoping in life after death, and I’ve attempted to justify that historically. So given these Christian doctrines, I think you can see that the existence of God and evil is not so improbable after all.


(4) Finally, I think that there is actually an argument for God from evil. It would go like this:

(i) If God does not exist, objective moral values do not exist. If there is no God, moral values are either socio-biological by-products or just expressions of personal preference.

(ii) Evil exists. That’s the premise of the atheist. There is real evil in the world.

(iii) Therefore, objective values do exist. Some things are really wrong.

(iv) Therefore, God exists.

Thus the presence of evil in the world actually demonstrates God’s existence because in the absence of God, there wouldn’t be any distinction objectively between good and evil, between right and wrong. So although evil in one sense calls into question God’s existence, in a much deeper sense, I think, it actually requires God’s existence.

So in the light of these four responses, I think that the argument from evil, as difficult and emotionally pressing as it might be, in the end doesn’t constitute a good argument against the existence of God. So I think the four arguments given against the existence of God by Dr. Tooley are inconclusive. You’ve still got my six arguments for God’s existence, and therefore I still think that on balance the evidence favors theism as the more rational worldview.

There are more debate transcripts on Craig’s Reasonable Faith web site.

Stephen C. Meyer: does the Big Bang cosmology disprove the existence of God?

Christianity and the progress of science
Christianity and the progress of science

Here’s the 66-minute video featuring Dr. Stephen C. Meyer, who holds the Ph.D in philosophy of science from Cambridge University, and other degrees in the hard sciences.

The lecture starts really, really slowly. You can just fast-forward to the 12 minute mark, or you might die of boredom.


  • Up until the the last 100 years or so, everyone agreed that the universe was eternal
  • This is at odds with the traditional Christian view that God created the universe
  • Materialism, the view that matter is all there is, requires eternally existing matter
  • Discovery #1: Hubble discovers that the universe is expanding (redshift observation)
  • The expanding universe was resisted by proponents of the eternal universe, like Einstein
  • Some naturalists even proposed speculative static models like the steady-state model
  • However, not of the speculative models fit with observations and experimental results
  • Discovery #2: Penzias and Wilson discover the cosmic microwave background radiation
  • Measurements of this background radiation confirmed a prediction of the Big Bang theory
  • The steady-state theory was falsified of by the discovery of this background radiation
  • The oscillating model was proposed to prevent the need for an absolute beginning
  • But the oscillating model is not eternal, it loses energy on each “bounce”
  • A paper by Alan Guth and Marc Sher from 1982 proved that our universe will not bounce
  • In addition, experiments reveal that the universe will expand forever, and not contract
  • The beginning of the universe is more at home in a theistic worldview than an atheistic one
  • The beginning of the universe fits in well with the Bible, e.g. – Genesis 1, Titus 1, etc.

In case you are wondering about what the evidence is for the Big Bang, here are 3 of the evidences that are most commonly offered:

Three main observational results over the past century led astronomers to become certain that the universe began with the big bang. First, they found out that the universe is expanding—meaning that the separations between galaxies are becoming larger and larger. This led them to deduce that everything used to be extremely close together before some kind of explosion. Second, the big bang perfectly explains the abundance of helium and other nuclei like deuterium (an isotope of hydrogen) in the universe. A hot, dense, and expanding environment at the beginning could produce these nuclei in the abundance we observe today. Third, astronomers could actually observe the cosmic background radiation—the afterglow of the explosion—from every direction in the universe. This last evidence so conclusively confirmed the theory of the universe’s beginning that Stephen Hawking said, “It is the discovery of the century, if not of all time.”

By the way, Dr. Meyer also does a great job of explaining the problem of proteins, DNA and the origin of life in this lecture. And you can hear him defend his views in this debate podcast with Keith Fox and in this debate podcast with Peter Atkins. He does a great job in these debates.

Positive arguments for Christian theism

Bible study: Was the resurrection body of Jesus spiritual or physical?

Sherlock Holmes and John Watson are going to take a look at the data
Sherlock Holmes and John Watson are going to take a look at the data

So, everyone from left to right accepts the early creed in 1 Corinthians 15:3-7 being dated to 1-3 years after the death of Jesus, even atheists like Crossley, Ludemann and Crossan. The thing is, some people are not sure that the appearances of Jesus to individuals, groups, and skeptics really were physical appearances. They say “well, Paul’s appearance was non-physical, so the other ones must have been, too”.

Let’s take a look.

Here’s a paragraph from my friend Eric Chabot, from his blog Think Apologetics. He explains why Paul’s use of the word “resurrection” to describe what the other witnesses saw means bodily resurrection.

He writes:

If Paul did have a vision then the term “vision” is vague and must be defined. As Licona points out, visions are either objective (i.e., something that is seen without the use of our natural senses) or subjective (i.e., a  product of our minds). The real  problem is with the vision hypothesis is that it doesn’t explain Paul’s use of resurrection to explain what had happened to Jesus.  The two words are used for resurrection in the New Testament “anastasis” (rising up) and “egersis” (waking up), both imply a physical body. Furthermore, the use of the word “opethe” (the Greek word for appeared) shows the Gospel writers did believe that Jesus appeared physically. “There you will see (opethe) him” (Matt. 28:7); “The Lord has risen and has appeared (opethe) to Simon” (Luke 24:24). When they used “opethe” here, it means that He appeared physically to them.

So when Paul gives his list of appearances in 1 Cor. 15, the issues becomes whether the appearance to him is the same as it was to the disciples. There is no doubt the post resurrection body of Jesus (after the ascension) had to be somewhat different than the body the disciples saw. Also, whenever the New Testament mentions the word body, in the context of referring to an individual human being, the Greek word “soma” always refers to a literal, physical body.Greek specialist Robert Gundry says “the consistent and exclusive use of soma for the physical body in anthropological contexts resists dematerialization of the resurrection, whether by idealism or by existentialism.” [9] Furthermore, in N.T. Wright’s  The Resurrection of the Son of God shows that the Greek word for resurrection which is “anastasis” was used by ancient Jews, pagans, and Christians as bodily in nature.

Now, I think my view on this, and I’m not sure if Eric would correct me, is that Paul got an objective but non-physical vision of Jesus. There was something there that everyone else could see and hear, in my view. But in my view Paul’s “veridical” vision was post-ascension, and so non-physical. Paul uses the word resurrection to describe what the other eyewitnesses saw (and he met them at least twice, according to Gal 1 and Gal 2), and that means physical resurrected body.

Eric Chabot writes this in another place:

Acts 9- Paul’s Damascus Road Experience

Here we see whatever happened,  this was after the ascension. Hence, to say Paul saw the exact same Jesus before he ascended is hard to infer from the text. There simply isn’t enough information here.  The Bible says, “they heard” the same voice Paul did ” (Acts 9: 7). But they “did not see anyone ” (Acts 9: 7). Notice  Paul was physically blinded by the brightness of the light.  One way or the other, the experience involved something that was external to Paul. It wasn’t something that was the same thing as a vision that Paul talks about in 2 Cor. 12:1.  Furthermore, the phrase “he let himself be seen’” (ōphthē , aorist passive, ), is the word Paul uses  in 1 Cor. 15:7 to describe of his own resurrection appearance as the other ones in the creed. As Paul Barnett says:

“It is sometimes claimed that the word appeared (ōphthē) means a mystical seeing, as of a vision, and that since this was what Paul “saw” it was what the other apostles “saw.” In other words, after death, Jesus was taken directly to heaven whence he “appeared” to various people, mystically, as it were. This however, is not all the meaning of Paul’s words. First, the word ōphthē, “appeared” is not limited to visionary seeing it is also used for physical seeing. Moreover, the verb raise used in the phrase ‘raised on the third day” is used elsewhere in combination with the words “from the dead” which literally means “from among the corpses.” Thus raised preceding  appeared gives the latter a physical not a mystical meaning. Christ, as “raised from the dead” ….appeared.”  Furthermore, when Paul asks “ Am I not free? Am I not an apostle? Have I not seen Jesus our Lord?”(1 Cor. 9: 1), he is using the ordinary word horan, “to see” for physical sight. If “seeing” the Lord “raised from the dead” qualified others to be apostles, then Paul is, indeed, an apostle. It was no mere subjective vision that arrested Paul en route to Damascus. (8) .

In the end, word studies can’t entirely resolve this issue. We need to remember the etymological fallacy as well. We  would have to look at all the texts that speak of resurrection (including the entire 1 Cor. 15 chapter in their entire context as well as the anthropology of the New Testament. We also need to study the resurrection in light of the Second Temple Jewish period. See our reading list here for some resources that may help.

But conservative ancient historian Gary Habermas seems to think that Paul got the physical body as well.

He says:

Now, I said before in 1 Corinthians 15, Paul could have chosen to only use the word pneuma. He doesn’t. He does say “spiritual,” but he’s got an adjective there. He also says, soma, “body.” What did Paul mean?

Philippians Chapter 3. It’s a short chapter. There are 21 verses, but Paul says three things in one chapter that indicate he’s talking about a physical resurrection. In the opening verses he says, “I was a Hebrew of the Hebrews” and “as touching the law,” he says, “I was a Pharisee.” Now, it’s very well known that the Pharisee believed in a bodily resurrection. In fact, according to Acts 23, as Paul was being taken captive by the Romans to prevent his being killed, he shouted out to the group of people and said, “Why are you taking me? Because I believe in the resurrec­tion of the dead?” He meant a literal resurrection.
When the Pharisees heard that, they said there’s nothing wrong with this guy. But the Sadducees [who didn’t believe in the Resurrection] didn’t like it. So as a Pharisee, he’s agreeing with the Pharisees.
So, the first evidence is from Philippians 3. As a Pharisee, Paul believes in a physical resur­rection.
Secondly, in verse 11 he says, “That I may attain the resurrection of the dead.” Now, the normal Greek word for resurrection is anastasis, but in this passage, Philippians 3:11, he puts a prefix on there, ek anastasis. Ekanastasis, according to all Greek scholars that I know of, is translated in this passage: “The out resurrection from among the dead.” Paul said, “I want to attain the out resurrection.”
Now, to a Jew, “out resurrection” means “what goes down is what comes up.” You come out from death. And then just a few verses later, Philippians 3:20,21, he said, “From Heaven, we look for Jesus who will change our vile soma (body) to be like unto His glorious soma (or body),” when he should have said pneuma, according to this other view.
So he’s a Pharisee who believes in a physical resurrection. Ek anastasis—“resurrection from out among the dead ones.”
Thirdly, Paul says, “He Jesus will change my body to be like His body.”

So right there in Philippians 3 alone, I think the picture of Jesus being some wispy spirit that appeared to him on the road to Damascus doesn’t fit Paul’s own data.

Yes, that’s why Philippians is my favorite book. You can get so much useful theology out of it. Something about the resurrection in Phil 3, something about Jesus’ divinity in Phil 2, and loads of practical advice on stewardship, charity, fellowship, endurance and practical love for others throughout. Some of it takes a little digging, but that’s what commentaries are for, am I right? But I digress.

If you want to read something a little more challenging, I found a paper from the Evangelical Theological Society (ETS) from their journal, where it talks more about soma and anastasis. If you want a bit of a challenge, download the PDF and read it. It’s by Kirk R. MacGregor and the title is “1 Corinthians 15:3B–6A, 7 And The Bodily Resurrection Of Jesus”.