Exodus 2:11-15

11And it came to pass in those days, when Moses was grown, that he went out to his brethren and looked on their burdens; and he saw an Egyptian smiting a Hebrew, one of his brethren.

12And he turned this way and that way, and when he saw that there was no man, he smote the Egyptian, and hid him in the sand.

13And he went out on the second day, and behold, two Hebrew men were quarrelling; and he said to him that was in the wrong, Why art thou smiting thy neighbour?

14And he said, Who made thee ruler and judge over us? dost thou intend to kill me, as thou killedst the Egyptian? Then Moses feared, and said, Surely the matter is known.

15And Pharaoh heard of this matter, and sought to slay Moses. But Moses fled from before Pharaoh, and dwelt in the land of Midian. And he sat by the well.