Saul said to Samuel, Yes, I have obeyed the voice of Yahweh, and have gone the way which Yahweh sent me, and have brought Agag the king of Amalek, and have utterly destroyed the Amalekites.
The Bible says, "to fulfill the desires thereof. Crucify the old man, the old nature. If you by the Spirit do mortify the deeds of the flesh, put it to death" ( Romans 8:13 ). God says, "don't give place for it, utterly wipe it out."