Seeing one of them wronged, he came to his defense and paid back the man who was crushing him, striking down the Egyptian.
In context
22Moses was trained in all the wisdom of the Egyptians, and he was powerful in his words and in his deeds. 23When he reached the age of forty, it came into his heart to visit his brothers, the sons of Israel. 24Seeing one of them wronged, he came to his defense and paid back the man who was crushing him, striking down the Egyptian. 25He thought his brothers would understand that God was giving them deliverance through his hand; but they did not understand. 26The next day he appeared to two of them who were fighting, and he tried to bring them back to peace: ‘Men, you are brothers. Why are you wronging each other?’