1 Samuel 15:4-6

So Saul summoned the men and mustered them at Telaim—two hundred thousand foot soldiers and ten thousand from Judah. Saul went to the city of Amalek and set an ambush in the ravine. Then he said to the Kenites, “Go away, leave the Amalekites so that I do not destroy you along with them; for you showed kindness to all the Israelites when they came up out of Egypt.” So the Kenites moved away from the Amalekites.