1 Samuel 15:
And 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. 2 Thus 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. 3 Now go and strike Amalek and devote to destruction[a] all that they have. Do not spare them, but kill both man and woman, child and infant, ox and sheep, camel and donkey.