Who made you ruler and judge?
Stephen repeats the words of the Israelite who rejected Moses as ruler and judge and threatened to expose his killing of the Egyptian.
The next day he came upon two Israelites who were fighting, and he tried to reconcile them, saying, ‘Men, you are brothers. Why are you mistreating each other?’ But the man who was abusing his neighbor pushed Moses aside and said, ‘Who made you ruler and judge over us? Do you want to kill me as you killed the Egyptian yesterday?’ At this remark, Moses fled to the land of Midian, where he lived as a foreigner and had two sons.
Exodus 2:13-15 records the man's question, Moses' fear, and his flight from Pharaoh; Acts 7:26-29 quotes the rejection and recounts Moses' flight to Midian.