Exodus 2:15

13And when he went out the second day, behold, two men of the Hebrews strove together: and he said to him that did the wrong, Wherefore smitest thou thy fellow?

14And he said, Who made thee a prince and a judge over us? intendest thou to kill me, as thou killedst the Egyptian? And Moses feared, and said, Surely this thing is known.

15Now when Pharaoh heard this thing, he sought to slay Moses. But Moses fled from the face of Pharaoh, and dwelt in the land of Midian: and he sat down by a well.

16Now the priest of Midian had seven daughters: and they came and drew water, and filled the troughs to water their father’s flock.

17And the shepherds came and drove them away: but Moses stood up and helped them, and watered their flock.