1 Samuel 14:48
And he did valiantly and struck the Amalekites and delivered Israel out of the hands of those who plundered them.
Exodus 17:14
Then the LORD said to Moses, "Write this as a memorial in a book and recite it in the ears of Joshua, that I will utterly blot out the memory of Amalek from under heaven."
Deuteronomy 25:19
Therefore when the LORD your God has given you rest from all your enemies around you, in the land that the LORD your God is giving you for an inheritance to possess, you shall blot out the memory of Amalek from under heaven; you shall not forget.
1 Samuel 15:3-7
Now go and strike Amalek and devote to destruction all that they have. Do not spare them, but kill both man and woman, child and infant, ox and sheep, camel and donkey.'"