Exodus 18:2-5

And Jethro, Moses' father-in-law, took Zipporah, Moses' wife, after he had sent her away, And her two sons, one of whom was named Gershom, for he said, I have been living in a strange land: And the name of the other was Eliezer, for he said, The God of my father was my help, and kept me safe from the sword of Pharaoh: And Jethro, Moses' father-in-law, came with his sons and his wife to where Moses had put up his tent in the waste land, by the mountain of God.