Acts 7:23-26
7:23 But when he was about forty years old, it entered his mind to visit his fellow countrymen the Israelites.
7:24 When he saw one of them being hurt unfairly, Moses came to his defense and avenged the person who was mistreated by striking down the Egyptian.
7:25 He thought his own people would understand that God was delivering them through him, but they did not understand.
7:26 The next day Moses saw two men fighting, and tried to make peace between them, saying, ‘Men, you are brothers; why are you hurting one another?’