I agree. Moses, though he identified with the Hebrews, did not have a life among believers. After he committed murder, he fled and was welcomed into Jethro's home and family. It is not happenstance that Moses went from great power to lowly, humbling work. God would need Moses to have a more willing heart for what he was preparing him to do. It was not a low self esteem or lack of faith, rather an immature faith that questioned God. Moses would learn that he would be able to do all things through Him who strengthens us. I can learn the same thing.