2:16-22 Moses found shelter in Midian. He was ready to help Reuel's daughters to water their flocks, although bred in learning and at court. Moses loved to be doing justice, and to act in defence of such as he saw injured, which every man ought to do, as far as it is in his power. He loved to be doing good; wherever the providence of God casts us, we should desire and try to be useful; and when we cannot do the good we would, we must be ready to do the good we can. Moses commended himself to the prince of Midian; who married one of his daughters to Moses, by whom he had a son, called Gershom, a stranger there, that he might keep in remembrance the land in which he had been a stranger.
16-22. the priest of Midian—or, "prince of Midian." As the officers were usually conjoined, he was the ruler also of the people called Cushites or Ethiopians, and like many other chiefs of pastoral people in that early age, he still retained the faith and worship of the true God.
seven daughters—were shepherdesses to whom Moses was favorably introduced by an act of courtesy and courage in protecting them from the rude shepherds of some neighboring tribe at a well. He afterwards formed a close and permanent alliance with this family by marrying one of the daughters, Zipporah, "a little bird," called a Cushite or Ethiopian (Nu 12:1), and whom Moses doubtless obtained in the manner of Jacob by service [see Ex 3:1]. He had by her two sons, whose names were, according to common practice, commemorative of incidents in the family history [Ex 18:3, 4].