1 Samuel 15:4-6
15:4 So Saul assembled the army and mustered them at Telaim. There were 200,000 foot soldiers and 10,000 men of Judah.
15:5 Saul proceeded to the city of Amalek, where he set an ambush in the wadi.
15:6 Saul said to the Kenites, “Go on and leave! Go down from among the Amalekites! Otherwise I will sweep you away with them! After all, you were kind to all the Israelites when they came up from Egypt.” So the Kenites withdrew from among the Amalekites.