In an answer it was said that Jesus never says he is God or 'God the Son' as part of a trinity (reformatted):
He has a God - the same (creator) God as all humans.
- John 5:44 -- the one and only God
- 2 Cor 1:3, Eph 1:3, Col 1:3, 2 Cor 11:31, Rom 15:6, Rom 1:7 -- the God of our Lord Jesus
- 1 Pet 1:3 Heb 1:8-9 -- God anointed Jesus
- Rev: 1:1, 1:6, 3:12 -- even ascended, Jesus still has the same God of him and of us
Jesus often refers to his Father and God in an equivalent manner:
- "You have loved me and have believed that I came from God. I came from the Father and have come into the world." (John 16:27)
- I am ascending to my Father and your Father, to my God and your God. (John 20:17)
- a man who has told you the truth that I heard from God. (John 8:40)
This got me thinking: What is the logical argumentation for the doctrine of trinity?
It does not seem to be directly stated in the bible as a doctrine, although it seems - in a way - kind of obvious to me when reading, e.g. the gospel of John in one go. However, "seems obvious" is hardly a good argument.