Albert Barnes Commentary Exodus 2:16

"Now the priest of Midian had seven daughters: and they came and drew water, and filled the troughs to water their father`s flock." — Exodus 2:16 (ASV)

The Priest of Midian - Reuel (Exodus 2:18). His name, and the detailed notices in (Exodus 18), prove that he was a priest of the one true God who was known to the patriarchs especially under the name El. The great bulk of his tribe, certainly those who lived farther north and more closely in contact with the Hamites of Canaan, were already plunged in idolatry. The conduct of the shepherds (Exodus 2:17) may indicate that his person and office were lightly regarded by the idolatrous tribes in his immediate neighborhood.