I don’t see it as Moses trying to shirk his duty when he tells God that he can’t speak well. How would you feel if the Creator of the Universe asked you to do something, especially if you thought you might mess it up? He might have felt intimidated or overwhelmed. I think I might feel that way.
I see the reason Moses was concerned with his speech and felt inadequate was because he was raised in the Pharaoh's household and spoke Egyptian (a dead language now). Aaron was chosen to speak, because he spoke and was raised speaking the Hebrew language :)
Multiple names for the same person may not bother you, but it does me ! I have been studying the bible for 50 years now, and I have found so many contradictions that I am more confused now than ever before. Just about every person I bible study with have no clue of the many problems and contradictions in the bible. Ignorance is bliss, as they say.
