and all the cities of King Sihon of the Amorites who ruled in Heshbon, and ended at the Ammonite border.

King Sihon of the Amorites who lived ¹  in Heshbon and ruled from Aroer (on the edge of the Arnon Valley) – including the city in the middle of the valley ²  and half of Gilead – all the way to the Jabbok Valley bordering Ammonite territory.

It encompassed ¹  all the cities of the plain and the whole realm of King Sihon of the Amorites who ruled in Heshbon. Moses defeated him and the Midianite leaders Evi, Rekem, Zur, Hur, and Reba (they were subjects of Sihon and lived in his territory). ²