Deuteronomy 3:8
So at that time we took the land of the two Amorite kings in the Transjordan from Wadi Arnon to Mount Hermon
Joshua 12:2-6
King Sihon of the Amorites who lived in Heshbon and ruled from Aroer (on the edge of the Arnon Valley) -- including the city in the middle of the valley and half of Gilead -- all the way to the Jabbok Valley bordering Ammonite territory.
Joshua 13:9-12
Their territory started from Aroer (on the edge of the Arnon Valley), included the city in the middle of the valley, the whole plain of Medeba as far as Dibon,
Numbers 32:33-42
So Moses gave to the Gadites, the Reubenites, and to half the tribe of Manasseh son of Joseph the realm of King Sihon of the Amorites, and the realm of King Og of Bashan, the entire land with its cities and the territory surrounding them.