1 Samuel 15:2-3

2This is what the LORD Almighty says: ‘I will punish the Amalekites for what they did to Israel when they waylaid them as they came up from Egypt.

3Now go, attack the Amalekites and totally destroy The Hebrew term refers to the irrevocable giving over of things or persons to the Lord, often by totally destroying them; also in verses 8, 9, 15, 18, 20 and 21. all that belongs to them. Do not spare them; put to death men and women, children and infants, cattle and sheep, camels and donkeys.’ ”