Deuteronomy 2:16-23 - Journey Past Ammon
16 "{And then} when all the men of war {had died} from among the people, 17 Yahweh spoke to me, {saying}, 18 'You [are] about to cross over the boundary of Moab {today} at Ar. 19 When you approach {the border of} the {Ammonites}, you shall not harass them, and you shall not get involved in battle with them, for I have not given the land of {the Ammonites} to you as a possession; because I have given it to the descendants of Lot [as] a possession.
20 (It is also considered the land of Rephaim; Rephaim lived in it {previously}, and the Ammonites called them Zamzummim, 21 a people great and numerous and as tall as the Anakites; Yahweh destroyed them from before them, and they dispossessed them and settled in place of them, 22 just as he did for the descendants of Esau, who live in Seir, when he destroyed the Horites from {before them} and dispossessed them, and [then] they settled in their place up to this day. 23 And [also] the Avvites, who lived in villages as far as Gaza, [and the] Caphtorim, who came out from Caphtor, destroyed them and [then] settled in their place.