From Aroer on the edge of the Arnon Valley and the city in that valley as far as Gilead, no city had walls that could keep us out. The Lord our God gave us all of them.
Sihon was the Amorite king who lived in Heshbon. His rule extended from Aroer on the edge of the Arnon Valley to the Jabbok River, which is the border of Ammon. This included the middle of the valley and half of Gilead.
Israel has now lived in Heshbon, Aroer, all their villages, and in all the cities along the Arnon River for 300 years. Why didn’t you recapture these cities during that time?