Deuteronomy 25:18-19

21st Century King James Version

¹⁸ how he met thee on the way and smote the hindmost of thee, even all who were feeble behind thee, when thou wast faint and weary; and he feared not God.

¹⁹ Therefore it shall be, when the Lord thy God hath given thee rest from all thine enemies round about, in the land which the Lord thy God giveth thee for an inheritance to possess it, that thou shalt blot out the remembrance of Amalek from under heaven; thou shalt not forget it.