1 Samuel 14:48
He did valiantly, and struck the Amalekites, and delivered Israel out of the hands of those who despoiled them.
Exodus 17:14
Yahweh said to Moses, "Write this for a memorial in a book, and rehearse it in the ears of Joshua: that I will utterly blot out the memory of Amalek from under the sky."
Deuteronomy 25:19
Therefore it shall be, when Yahweh your God has given you rest from all your enemies all around, in the land which Yahweh your God gives you for an inheritance to possess it, that you shall blot out the memory of Amalek from under the sky; you shall not forget.
1 Samuel 15:3-7
Now go and strike Amalek, and utterly destroy all that they have, and don't spare them; but kill both man and woman, infant and nursing baby, ox and sheep, camel and donkey.'"