Judges 8:18-19

18He asked Zebah and Zalmunna, “What kind of men did you kill at Tabor?” They answered, “They were like you. Each one looked like a king’s son.”

19Gideon replied, “They were my brothers, my mother’s sons. I solemnly swear, as the Lord lives, if you had let them live, I would not have to kill you now.”