1 Samuel 15:2

15:2 Here is what the Lord of hosts says: ‘I carefully observed how the Amalekites opposed Israel along the way when Israel came up from Egypt.

1 Samuel 15:18

15:18 The Lord sent you on a campaign saying, ‘Go and exterminate those sinful Amalekites! Fight against them until you have destroyed them.’

1 Samuel 15:32

Samuel Puts Agag to Death

15:32 Then Samuel said, “Bring me King Agag of the Amalekites.” So Agag came to him trembling, thinking to himself, “Surely death is bitter!”