I agree with most of what you posted and appreciate your comments but using Thomas to prove the trinity is absurd. Just minutes before Thomas doubted Jesus rose from the dead after having being around when Jesus performed countless miracles. Thomas was clueless. He sees this miracle and calls him God. Ok. Better late than never. That alone does not provide much support for the fine theological details of the trinity. Having that said Thomas is not needed. There are many other passages that deal with trinity.
“He sees this miracle and calls him God. “
I don’t think using Thomas as a good proof of the Trinity is absurd, not so much because of Thomas, but because of Jesus’ response. Rather than rebuke Thomas, or correct him, He praises him. He would not have done that had Thomas addressed him in an idolatrous fashion.
Another favorite of mine:
“Philip said to Him, “Lord, show us the Father, and it is sufficient for us.”
Jesus said to him, “Have I been with you so long, and yet you have not known Me, Philip? He who has seen Me has seen the Father; so how can you say, ‘Show us the Father’?”
John 14:8-9.
The gospel of John, of course, is a treasure trove of references to the divinity of Christ.