1 Samuel 15:1-3
15 And Samuel said to Saul, The Lord sent me, that I should anoint thee into king on his people Israel (The Lord hath sent me to anoint thee king upon his people Israel); now therefore hear thou the voice of the Lord.
2 The Lord of hosts saith these things, I have brought to mind whatever things Amalek hath done to Israel; how Amalek against-stood Israel in the way, when Israel went up from Egypt. (The Lord of hosts saith these things, I have remembered all the things that the Amalekites did to Israel; how they opposed Israel on the way, when Israel came up from Egypt.)
3 Now therefore go thou, and slay Amalek, and destroy thou all his things; spare thou not him, nor covet thou anything of his things; but slay thou from man unto woman, and little child, and sucking, ox, and sheep, and camel, and ass. (And so now go thou, and kill the Amalekites, and destroy thou all of their things; spare thou not any of them, nor covet thou any of their things; but kill thou every man and woman, and little child, and suckling, yea, every ox, and sheep, and camel, and donkey.)Read full chapter