Now that I have written five thousand words about why I think the Christian doctrine of the Trinity is a true and biblical description of the One God, someone might wish to ask me, “What difference does it make?” Sure, traditional Christian orthodoxy (held today by evangelical and conservative Protestants of all denominations, traditional Roman Catholics, and most Eastern and Oriental Orthodox) believes in the Trinity, while Oneness Pentecostals, Jehovah’s Witnesses, Unitarians, liberals (both Protestant and Roman Catholic), and Muslims do not. But is that just an interesting and incidental detail, along the lines of different traditions of church decoration? Or is it relevant to how Christians live out their faith in practice? Does this Trinitarian theology matter?
I think it does matter, and it matters a lot. Now, I will readily grant up front that it does not seem to matter to many Christians, who live out their lives with scarcely a thought regarding Trinitarian vs. Unitarian doctrine. But I think it does matter, and ought to matter a great deal to Christian life and faith. (more…)