Moses wasn't a missionary; he was a refugee. The standard Sunday school narrative suggests a prince of Egypt, steeped in the polytheism of the Nile, fled to a "backward" desert and brought the light of the One True God to nomadic sheep-herders. Text, and the archaeology, shows the exact opposite. Moses didn’t go to the desert to teach; he went to learn. He didn't bring God to the Midianites; the Midianites introduced him to the God of the Mountain.