I mean, the core of Christian thought is that God the Father has saved us by sending the Son and the Holy Spirit, and in doing that He has made known to us that God eternally is Father, Son, and Holy Spirit. So this is a judgment about the entire meaning of everything in the Bible, the entire plan of salvation as it bears on the question “Who is God?” That is to say, the doctrine of the Trinity is not just one of, say, twelve doctrines you ought to cover in a systematic theology survey. It certainly