On one occasion Moses was ready to quit after listening to the Israelites complain for the umpteenth time. He basically said, "Lord, if it is going to keep on being this way, I would prefer that you would just kill me right now.
He started scaling back French troop contingents in Africa, and in a famous speech gave deep offence on the continent, when hebasicallysaid it was time Africans started doing things for themselves.