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

and all the cities of Sihon king of the Amorites, who reigned in Heshbon, to the border of the Ammonites;

this as their territory:

Jazer and all the cities of Gilead, and half the land of the Ammonites to Aroer, near Rabbah;