Is Jesus God or a Human?

The Bible describes God as: God is the All-Powerful Creator of the universe. If the God is All-Powerful - how would a human (who is the less powerful) be able to crucify the All-Powerful God (Jesus) - how would I worship a God who can't protect himself and one day when he was baby, he needed the human to protect him and feed him to stay alive! - what was he before he becomes an embryo? and where was he? was he nothing? - if yes, how was he created? - if yes, who then created the human before he gets created?