Exodus 18:2-4

In the meantime, Moses had sent his wife Zipporah and her two sons to stay with Jethro, and he had welcomed them. Moses was still a foreigner in Midian when his first son was born, and so Moses said, “I'll name him Gershom.” When his second son was born, Moses said, “I'll name him Eliezer, because the God my father worshipped has saved me from the king of Egypt.”