2 Then Jethro, Moses' father-in-law, took Zipporah, Moses' wife, after he had sent her back, 3 with her two sons, of whom the name of one was Gershom (for he said, "I have been a stranger in a foreign land") 4 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"); 5 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. 6 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."
Matthew Henry's Commentary on Exodus 18:2-6
Commentary on Exodus 18:1-6
(Read Exodus 18:1-6)
Jethro came to rejoice with Moses in the happiness of Israel, and to bring his wife and children to him. Moses must have his family with him, that while he ruled the church of God, he might set a good example in family government, 1 Timothy 3:5.