1 Samuel 15:8-9

15:8 He captured King Agag of the Amalekites alive, but he executed all Agag’s people with the sword. 15:9 However, Saul and the army spared Agag, along with the best of the flock, the cattle, the fatlings, and the lambs, as well as everything else that was of value. They were not willing to slaughter them. But they did slaughter everything that was despised and worthless.

1 Samuel 15:32-33

Samuel Puts Agag to Death

15:32 Then Samuel said, “Bring me King Agag of the Amalekites.” So Agag came to him trembling, thinking to himself, “Surely death is bitter!” 15:33 Samuel said, “Just as your sword left women childless, so your mother will be the most bereaved among women!” Then Samuel hacked Agag to pieces there in Gilgal before the Lord.