Brotherdan: Revelation 1 makes the position clear. He became the "First and the Last" in relation to the resurrection. I don't see the stumbling issue. He had taken another form and had "not yet ascended to his father".
As for Thomas' words... this is a language matter. Please do your research. These words are written in the NOMINATIVE and not the Vocative. Something I wrestles with for years. Thomas' address to Jesus was the same as other acknowledgments in Scripture to God's representatives. Usually Angels... these could hardly be Almighty God himself.. or could they, with your reasoning?
Matthew 27:51-53 makes an interesting read for the mentally inquisitive. If you read that in KJV English... you would think the Voodoo priests have a point.. Read it in the NWT. (Has WT endulged in free interpretation there.. or, in fact, do they have a strong and valid point there).
I find it hard to grasp that 2 thirds of a triad intervened... the trinity holds no water for me.
Podo