Exodus 2:17-19
2:17 When some shepherds came and drove them away, Moses came up and defended them and then watered their flock.
2:18 So when they came home to their father Reuel, he asked, “Why have you come home so early today?”
2:19 They said, “An Egyptian man rescued us from the shepherds, and he actually drew water for us and watered the flock!”