Joshua 12:1-2

1Now these are the kings of the land whom Bnei-Yisrael defeated and possessed their land beyond the Jordan toward the sunrise, from the valley of the Arnon to Mount Hermon, and all the Arabah eastward:

2King Sihon of the Amorites, who lived in Heshbon and ruled from Aroer, which is on the edge of the valley of the Arnon, and the middle of the valley, and half Gilead, even up to the Jabbok River, the border of the children of Ammon;