1 Samuel 15:30-33

30Saul replied, “I have sinned. But please honor me before the elders of my people and before Israel; come back with me, so that I may worship the LORD your God.”

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

32Then Samuel said, “Bring me Agag king of the Amalekites.” Agag came to him in chains. The meaning of the Hebrew for this phrase is uncertain. And he thought, “Surely the bitterness of death is past.”

33But Samuel said, “As your sword has made women childless, so will your mother be childless among women.” And Samuel put Agag to death before the LORD at Gilgal.