1 Samuel 14:48
And he gathered a host, and struck the Amalekites, and delivered Israel out of the hands of them that plundered them.
Exodus 17:14
And the LORD said unto Moses, Write this for a memorial in a book, and rehearse it in the ears of Joshua: for I will utterly put out the remembrance of Amalek from under heaven.
Deuteronomy 25:19
Therefore it shall be, when the LORD your God has given you rest from all your enemies round about, in the land which the LORD your God gives you for an inheritance to possess it, that you shall blot out the remembrance of Amalek from under heaven; you shall not forget it.
1 Samuel 15:3-7
Now go and strike Amalek, and utterly destroy all that they have, and spare them not; but slay both man and woman, infant and nursing child, ox and sheep, camel and donkey.