Jesus incarnated. He was a divine being that condensed and descended into the human egg and was sealed. His human body was resurrected which is directly tied to human salvation. He can appear as he did when he was here on earth but also has the ability to raise that body up to a big giant spirit beings revealing who he really is. Michael does mean one who is like god. He is firstborn of all of the heavenly beings. He is not a metaphor for adam. He is a being that existed in the heavenly kingdom and is an individual that took on the human body and that human body is now immortal and why he is referred to as the last man adam.Michael means "like God".
The question then, is whether Jesus is God or just like God...
Well, he is like God, but expressed in time.