1 Samuel 15:1-6

1And Samuel said to Saul, "The Lord sent me to anoint you king over his people Israel; now therefore listen to the words of the Lord.

2Thus says the Lord of hosts, 'I have noted what Amalek did to Israel in opposing them on the way when they came up out of Egypt.

3Now go and strike Amalek and devote to destruction all that they have. Do not spare them, but kill both man and woman, child and infant, ox and sheep, camel and donkey.'"

4So Saul summoned the people and numbered them in Telaim, two hundred thousand men on foot, and ten thousand men of Judah.

5And Saul came to the city of Amalek and lay in wait in the valley.

6Then Saul said to the Kenites, "Go, depart; go down from among the Amalekites, lest I destroy you with them. For you showed kindness to all the people of Israel when they came up out of Egypt." So the Kenites departed from among the Amalekites.