Deuteronomy 3:8
So we took the land at that time out of the hand of the two kings of the Amorites who were beyond the Jordan, from the Valley of the Arnon to Mount Hermon
Joshua 12:2-6
Sihon king of the Amorites who lived at Heshbon and ruled from Aroer, which is on the edge of the Valley of the Arnon, and from the middle of the valley as far as the river Jabbok, the boundary of the Ammonites, that is, half of Gilead,
Joshua 13:9-12
from Aroer, which is on the edge of the Valley of the Arnon, and the city that is in the middle of the valley, and all the tableland of Medeba as far as Dibon;
Numbers 32:33-42
And Moses gave to them, to the people of Gad and to the people of Reuben and to the half-tribe of Manasseh the son of Joseph, the kingdom of Sihon king of the Amorites and the kingdom of Og king of Bashan, the land and its cities with their territories, the cities of the land throughout the country.