Exodus 18:1-3

And Jethro, the priest of Midian, Moses’ father-in-law, heard of all that God had done for Moses and for Israel His people—that the LORD had brought Israel out of Egypt. 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”)