Exodus 17:14,16
And the LORD said to 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.
Nave's Topical Index—AKJV

Numbers 24:20
And when he looked on Amalek, he took up his parable, and said, Amalek was the first of the nations; but his latter end shall be that he perish for ever.
Nave's Topical Index—AKJV