Acts 7:24 KJV
And seeing one of them suffer wrong, he defended him, and avenged him that was oppressed, and smote the Egyptian:
Acts 7:24, King James Version
In context
23 And when he was full forty years old, it came into his heart to visit his brethren the children of Israel.
24 And seeing one of them suffer wrong, he defended him, and avenged him that was oppressed, and smote the Egyptian:
25 For he supposed his brethren would have understood how that God by his hand would deliver them: but they understood not.