Deuteronomy 25:17-19 - Revenge On The Amalekites
17 "Remember what Amalek did to you on the journey when you went out from Egypt, 18 that he met you on the journey and attacked you, all those lagging behind you and [when] you were weary and worn out, and he did not fear God. 19 {And when} Yahweh your God gives rest to you from all your enemies from around [about you] in the land that Yahweh your God [is] giving to you [as an] inheritance to take possession of it, you shall blot out the remembrance of Amalek from under the heavens; you shall not forget!"