Exodus 18:2-6

Then Jethro, Moses’ father-in-law, took Zipporah, Moses’ wife, after he had sent her back, with her two sons, of whom the name of one was Gershom (for he said, “I have been a stranger in a foreign land”) and the name of the other was Eliezer (for he said, “The God of my father was my help, and delivered me from the sword of Pharaoh”); and Jethro, Moses’ father-in-law, came with his sons and his wife to Moses in the wilderness, where he was encamped at the mountain of God. Now he had said to Moses, “I, your father-in-law Jethro, am coming to you with your wife and her two sons with her.”