that's a key question that even the best theologians can't answer. It also said that God would protect him and his wife from the others. Where'd she come from? Aren't there only suposed to be 4 total? and where did the others come from? Who are they?

See, I believe the Bible tells a story that picks up where it would have left off if a previous chapter had been written. Thus, the story of Adam and Eve aren't part of the VERY beginning, but God made them the main characters and starts the story there.