Joshua 12:1-2

1These are the kings of the land whom the Israelites had defeated and whose territory they took over east of the Jordan, from the Arnon Gorge to Mount Hermon, including all the eastern side of the Arabah:

2Sihon king of the Amorites, who reigned in Heshbon. He ruled from Aroer on the rim of the Arnon Gorge—from the middle of the gorge—to the Jabbok River, which is the border of the Ammonites. This included half of Gilead.