Their territory started at Aroer (on the edge of the Arnon Valley) and included the city in the middle of the valley, the whole plain of Medeba,

Now 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:

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,

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.