Yes,......Revelation 1:17,18
No one is disputing that Jesus is a divine Person. What you are overlooking is that while that Person has always existed, before the incarnation he had only a divine nature.
Jesus is a man. Jesus has always been a man. Jesus cannot have been present at the Creation because his mother did not exist yet.
You evidently do not understand why the Council of Ephesus called Mary the "mother of God". It's not about Mary at all. "Mother of God" is a christological term; it tells us who Jesus is.