Joshua 12:1-2

1The Israelites struck down the following kings of the land and took possession of their land beyond the Jordan to the east and from the Arnon River to Mount Hermon, including all the Arabah eastward:

2King Sihon of the Amorites lived in Heshbon. He ruled from Aroer on the rim of the Arnon River, along the middle of the valley, and half of Gilead up to the Jabbok River (the border of the Ammonites),