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What is the Christian doctrine of the Trinity?

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The Christian doctrine of the Trinity
The Christian doctrine of the Trinity

I have a friend who is considering Christianity and he is stuck on the doctrine of the Trinity. Tom, this one’s for you.

Excerpt:

So, what exactly do we mean when we talk about the Trinity? Writing in the early third century, in hisAgainst Praxeas, Tertullian is credited with first employing the words “Trinity”, “person” and “substance” to convey the idea of the Father, Son and Spirit being “one in essence — but not one in person”. Indeed, Tertullian writes,

“Thus the connection of the Father in the Son, and of the Son in the Paraclete, produces three coherent Persons, who are yet distinct One from Another. These Three are, one essence, not one Person, as it is said, “I and my Father are One,” in respect of unity of substance not singularity of number.”

This concept was established as church orthodoxy at the famous Council of Nicaea in A.D. 325. The Nicene Creed speaks of Christ as “God of God, Light of Light, very God of very God, begotten not made, being of one substance with the Father.”

It is this definition that I am going to assume in the discussion that follows. Succinctly, then, the doctrine of the Trinity may be defined thusly: Within the one being or essence that is God, there exists three co-equal and co-divine distinct persons — namely the Father, Son and Holy Spirit — who share that essence fully and completely. This concept is not to be confused with polytheism, which maintains that there are multiple gods. While orthodox Christianity emphatically holds there to be only one God, we nonetheless understand God to be complex in his unity. The concept is also not to be confused with the ancient heresy of modalism, which maintains that God exists in three different modes. The Son has never been the Father and the Holy Spirit has never been the Son or the Father. Modalism is refuted by the picture given to us in all four gospels (Matthew 3:16-17; Mark 1:9-11; Luke 3:21-22; John 1:32-34) in which the Holy Spirit descends on Jesus in the form of a dove and a voice is heard from Heaven “This is my beloved Son. With him I am well pleased.” Similarly, it should be noted that the Father, Son and Spirit do not each make up merely a third of the Godhead. Rather, each of the three persons is God in the full and complete sense of the word.

Having shown that Scripture emphatically rejects the notion that the Father, Son and Spirit are synonymous persons, only five propositions remain to be demonstrated in order to provide Biblical substantiation for the concept of the Trinity. Those propositions are:

  1. There is only one eternal God.
  2. The Father is the eternal God.
  3. The Son is the eternal God.
  4. The Holy Spirit is the eternal God.
  5. Although the Father, Son and Holy Spirit are non-synonymous persons, the concept of the Trinity does not violate the law of non-contradiction.

Let’s take a look at each of these in turn.

He then takes a close look at what the Bible says about God with respect to those assertions. There can be no doubt that the Bible teaches that God is one divine substance, and three persons.

Polemics

Why does God allow his creatures to suffer?

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Another great post from Christian Apologetics UK. This thing is so full of arguments, it’s hard to choose what to excerpt!

I’ll choose something from Section 2:

Third, there is the free-will defence. Love is only genuine when it is not coerced. True love requires the ability to exercise free will. Thus, to facilitate the ability of free creatures to genuinely love God requires that one take the risk that these free creatures will choose to reject God or to violate His commandments. 

Fourth, as suggested by proponents of Molinism, it is possible that only a world which was suffused with a certain amount of evil and suffering would result in the maximum number of people freely coming to know God. The doctrine of divine middle knowledge attests that God has knowledge of counterfactuals: That is, God has knowledge of what His free creatures would do under any circumstances. If this is the case, then it is possible that God has chosen to actualise a world — out of an array of possible worlds — in which the maximum number of people would choose to know God as their Creator and Saviour, without being in violation of their rights of autonomy and existential freedom of the will.

Fifth, God often uses evil and suffering to accomplish his ends. One classic example of this is in the story of Joseph being sold into slavery by his jealous brothers, an incident which set in motion a chain of events which ultimately led to Joseph being falsely accused of a crime and subsequently being thrown into prison. Later, Joseph is promoted to the position of Pharaoh’s right-hand man, and is in a unique position to be able to administer food during times of severe famine: Including the saving of his family. In Genesis 50:20, Joseph says, “You intended to harm me, but God intended it for good to accomplish what is now being done, the saving of many lives.”

Everybody needs to know how to answer this objection, so read the post.

Here’s an excellent lecture on the problems of evil and suffering by Doug Geivett, if you want something to listen to. And here’s a good text post on the problem of proving that God doesn’t have a morally sufficient reason to permit suffering.

Podcasts

A Christian and a postmodern relativist debate atheism and Christianity

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I listened to an episode of the the radio show “Unbelievable”, which is broadcast in the UK by Premier Christian radio.

Details:

“The Atheist’s Bible” (Duckworth & Co) has been a bestseller in the USA. It brings together a mass of quotes from atheists, agnostics and more. Its compiler Joan Konner speaks to Justin Brierley about why she put it together and her own thoughts on atheism. She interacts with Christian apologist Peter Williams whose own book “The Sceptic’s Guide to Atheism” (Paternoster) has just been published.

Joan and Peter debate whether atheism has some fundamental faith assumptions of its own, as Peter argues that atheistic naturalism is a self-defeating notion. Joan argues that Christianity is arrogant in its exclusive claims.

The MP3 file is here.

Some people in our society believe that moral rules and the purpose of life should be decided based on an individual’s feelings and intuitions, and not by any external state of affairs that can be reasoned about or proven. I call these people postmoderns. Postmoderns are opposed to organized religions as well, because they usually come with set ideas of what’s right and wrong. Some organized religions, like Christian theism, try to show that their system of morality and their ideas about meaning and purpose in life should be accepted because their system is true – i.e. – because Christian claims about the way the world is are true, and therefore humans are obligated to act based on Christian morality and Christian ideas about the purpose of life. Postmoderns are especially hostile to these truth-claiming religions, and they attack them in several ways.

What postmoderns believe about religion

1. Postmoderns think that truth claims made by a religion cannot be proven true or false using public, testable evidence, because then people in some religions that contradict history or science would feel bad. I.e. – they think that claims made by a religion, like “the physical universe came into being out of nothing” cannot be tested using scientific experiments and shown to be true or false, because if you tested it and found that the universe did begin to exist, then people like Mormons who think that the universe is eternal would feel bad. So the safest thing for a postmodern to do is to assert that religions are all neither true nor false, and cannot be tested. This is, of course, not the view of religion that many religious people have – we think that morality and purpose are true objectively because we are able to make a case that the religion that defines them is true.

2. Postmoderns try to argue that changing their actions to comply with an objective moral reality or an object purpose, even if it has been shown to be true using logic and evidence, is “coercive” and opposed to individual freedom. I.e. – they think that even if a religion like Christian theism is shown to be true using science and history, they shouldn’t have to care about it, they should just be able to do whatever makes them feel good without caring about what’s true. It’s not that they have considered the case for Christian theism, it’s that they decide, in advance of considering the evidence, that they will not let the real state of affairs in the universe determine what is right or wrong, or what they are supposed to do with their lives. They don’t want to let what can be demonstrated about reality “coerce” their search for happiness.

3. For postmodernists, the purpose of religion cannot be to hold true beliefs about the external world. If the purpose of a religion were to have true beliefs, then religions that were false would be excluded, and that would make people in those false religions feel bad. So, the purpose of religions must be to make people behave well, because then they are all equivalent, and no religion is excluded. It is irrelevant to a postmodern that Christians claim that their religion hinges on a historical event, (the resurrection), which either happened or didn’t. Postmodernists refuse to assess the case for or against a religion by studying whether a religion’s claims are true. The want to treat them all as equal independently of truth, because, they claim, all religions are equally good at making people behave nicely. Postmoderns also like this view because it means that they do not have to waste any time assessing whether religions are true or false.

4. Tolerance, to a postmodernist, means that everyone has to behave as if morality is not real and that life has no objective meaning. If you think that the universe is any one way, or that people ought to act any particular way, then you are “intolerant” according to a postmodernist – because you think that your view of morality and purpose is real, and that it applies to others. Postmodernists want everyone to just arbitrarily decides their likes and dislikes, as well as the goals that give them significance. Postmodernists disagree with those who think that morality and meaning are objective – that they are set up by a Designer, and not up for individual humans to decide however they like.

Responding to postmodernism

I think that many people who have this postmodern/subjectivist/relativist view of morality and purpose are people who have been raised in strict religious environments that were focused more on rituals and compliance, and less on debate and truth. It’s a lot easier to persuade a postmodernist when you 1) express a genuine interest in them as a person, and 2) take the time to try to show them why you think that your religion is true. Trying to ram moral rules and a purpose to life down someone’s throat without settling the truth question is stupid and counter-productive. Never talk about religion and theology unless you can link it to analytical philosophy, history or science. When talking to a postmodern, try to avoid sounding like a pastor. Don’t sound mystical. Don’t speak Christianese. Try to show them that evaluating a religion’s claims is no different than evaluating any other testable claim.

It’s especially important to argue that religion is about truth, because no one is going to be able to defend morality and purpose in the context of a religion unless they can argue that the major claims of that religion are true. These days, most people are postmodern, and they’ve been trained to be offended by anyone who tells them that what they are doing is wrong or that what they are believing is false. If you aren’t coming from a truth perspective, with all your arguments and facts in order, then it is tremendously difficult to withstand the sobs and victimhood of an aggrieved postmodern. Pointing out the selfish motives of postmodernists is not a bad idea either – show how they care about truth in technical areas, say, but have a selective dislike of truth in religious and moral areas.