Joshua 12:1-2

1Now these are the kings of the land whom the Israelites defeated and drove from their land on the east side of the Jordan, from the Arnon Valley to Mount Hermon, including all the eastern Arabah:

2King 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.