Moses objected that the people would not believe him. God asked what was in his hand, and it was a staff. When he threw it down, it became a snake, and when he took it by the tail it became a staff again. Then God told him to put his hand inside his cloak, and when he took it out it was leprous, white as snow; when he did it again, it was healed. If they did not believe those signs, he was to take water from the Nile and pour it on dry ground, and it would become blood.
Moses then said he was not eloquent, but slow of speech and tongue. God replied that he had made human mouths and would be with Moses' mouth. When Moses asked God to send someone else, the Lord's anger burned against him. God said his brother Aaron the Levite was already coming to meet him, would speak for him to the people, and that Moses would be like God to Aaron.
Moses went back to Jethro and asked permission to return to Egypt, and Jethro sent him off in peace. The Lord assured him that all who sought his life were dead. Moses took his wife and sons and set out. God told him to do before Pharaoh all the wonders he had put in his hand, but that he would harden Pharaoh's heart so that he would not let the people go. Moses was to say that Israel was the Lord's firstborn son and that Pharaoh must let him go to serve him, or the Lord would kill Pharaoh's firstborn son.
On the way, at a lodging place, the Lord met Moses and sought to kill him. Zipporah took a flint knife, circumcised her son and touched Moses' feet with the foreskin, and the Lord let him alone. Aaron went to meet Moses at the mountain of God and kissed him. Moses told him all that God had said and the signs. They came, gathered the elders of Israel, Aaron spoke and Moses performed the signs. The people believed, and when they heard that the Lord had visited them and seen their affliction, they bowed down and worshiped.