1 Samuel 15:1-3

1Samuel told Saul, “The Lord sent me to anoint you as king over his people Israel. Now, listen to the words of the Lord.

2This is what the Lord of Armies says: ‘I witnessed what the Amalekites did to the Israelites when they opposed them along the way as they were coming out of Egypt.

3Now go and attack the Amalekites and completely destroy everything they have. Do not spare them. Kill men and women, infants and nursing babies, oxen and sheep, camels and donkeys.’”