1 Samuel 15:1

1Samuel said to Saul, “The LORD sent me to anoint you to be king over his people, over Israel. Now therefore listen to the voice of the LORD’s words.

2The LORD of Armies says, ‘I remember what Amalek did to Israel, how he set himself against him on the way when he came up out of Egypt.

3Now go and strike Amalek, and utterly destroy all that they have, and don’t spare them; but kill both man and woman, infant and nursing baby, ox and sheep, camel and donkey.’”