Judges 8:18-19

18Then Gideon said to Zebah and Zalmunna, “What kind of men were they whom you killed at Tabor?” And they replied, “They were like you, each one of them resembled the son of a king.”

19He said, “They were my brothers, the sons of my mother. As the Lord lives, if only you had let them live, I would not kill you.”