Deuteronomy 25:17-19 - Revenge On The Amalekites
17 Remember what Amalek did to you by the way, when you came forth out of Egypt, 18 how he met you by the way and struck those of you who were behind, all the feeble behind you, when you were faint and weary. And he did not fear God. 19 And it shall be when Jehovah your God has given you rest from all your enemies all around in the land which Jehovah your God gives you for an inheritance to possess it, you shall blot out the remembrance of Amalek from under heavens. You shall not forget.