Judges 8:18-19

18Then Gideon said to Zebah and Zalmunna, ‘Tell me about the men that you killed at Tabor. What kind of men were they?’ The kings answered, ‘They were like you. They looked like the sons of kings.’

19Gideon said, ‘Those were my brothers, my own mother's sons. If you had not killed my brothers, I would not kill you. I promise you that, as surely as the Lord lives.’