Moses was loyal to the oath he had given his father-in-law Jethro, never to return to Egypt without securing his consent. His first concern therefore was to go back to Midian and obtain his permission, which Jethro gave freely. Then Moses could set out on his journey. He tarried only to take his wife and his children with him, which made his father-in-law say, "Those who are in Egypt are to leave it, and thou desirest to take more thither?"
Moses replied: "Very soon the slaves held in bondage in Egypt will be redeemed, and they will go forth from the land, and gather at Mount Sinai, and hear the words, 'I am the Lord thy God,' and should my sons not be present there?" Jethro acknowledged the justice of Moses' words, and he said to him, "Go in peace, enter Egypt in peace, and leave the land in peace."