Deuteronomy 2:18-24

18‘This day you are to cross over at Ar, the boundary of Moab.

19And when you come near the people of Ammon, do not harass them or meddle with them, for I will not give you any of the land of the people of Ammon as a possession, because I have given it to the descendants of Lot as a possession.’ ”

20(That was also regarded as a land of giants; giants formerly dwelt there. But the Ammonites call them Zamzummim,

21a people as great and numerous and tall as the Anakim. But the Lord destroyed them before them, and they dispossessed them and dwelt in their place,

22just as He had done for the descendants of Esau, who dwelt in Seir, when He destroyed the Horites from before them. They dispossessed them and dwelt in their place, even to this day.

23And the Avim, who dwelt in villages as far as Gaza—the Caphtorim, who came from Caphtor, destroyed them and dwelt in their place.)

24“ ‘Rise, take your journey, and cross over the River Arnon. Look, I have given into your hand Sihon the Amorite, king of Heshbon, and his land. Begin to possess it, and engage him in battle.