Deuteronomy 25:18-19

New King James Version

¹⁸ how he met you on the way and attacked your rear ranks, all the stragglers at your rear, when you were tired and weary; and he ^(A)did not fear God. ¹⁹ Therefore it shall be, ^(B)when the Lord your God has given you rest from your enemies all around, in the land which the Lord your God is giving you to possess as an inheritance, that you will ^(C)blot out the remembrance of Amalek from under heaven. You shall not forget.