Exod 18:2-5

2After Moses had sent away his wife Zipporah, his father-in-law Jethro took her back,3along with her two sons. The name of the one was Gershom (for he said, “I have been an alien in a foreign land”),4and the name of the other, Eliezer (for he said, “The God of my father was my help, and delivered me from the sword of Pharaoh”).5Jethro, Moses' father-in-law, came into the wilderness where Moses was encamped at the mountain of God, bringing Moses' sons and wife to him.