1 Samuel 15:31

29Also the Strength of Israel will not lie nor repent; for he is not a man, that he should repent.”

30Then he said, “I have sinned; yet please honor me now before the elders of my people and before Israel, and come back with me, that I may worship the LORD your God.”

31So Samuel went back with Saul; and Saul worshiped the LORD.

32Then Samuel said, “Bring Agag the king of the Amalekites here to me!” Agag came to him cheerfully. Agag said, “Surely the bitterness of death is past.”

33Samuel said, “As your sword has made women childless, so your mother will be childless among women!” Then Samuel cut Agag in pieces before the LORD in Gilgal.