Acts 7:22-25

And Moses was learned in all the wisdom of the Egyptians, and was mighty in words and deeds. “Now when he was forty years old, it came into his heart to visit his brethren, the children of Israel. And seeing one of them suffer wrong, he defended and avenged him who was oppressed, and struck down the Egyptian. For he supposed that his brethren would have understood that God would deliver them by his hand, but they did not understand.