Numbers 21:10-15, 23-27

The People of Israel set out and camped at Oboth. They left Oboth and camped at Iye Abarim in the wilderness that faces Moab on the east. They went from there and pitched camp in the Zered Valley. Their next camp was alongside the Arnon River, which marks the border between Amorite country and Moab. The Book of the Wars of GOD refers to this place: Waheb in Suphah, the canyons of Arnon; Along the canyon ravines that lead to the village Ar And lean hard against the border of Moab.

But Sihon wouldn’t let Israel go through. Instead he got his army together and marched into the wilderness to fight Israel. At Jahaz he attacked Israel. But Israel fought hard, beat him soundly, and took possession of his land from the Arnon all the way to the Jabbok right up to the Ammonite border. They stopped there because the Ammonite border was fortified. Israel took and occupied all the Amorite cities, including Heshbon and all its surrounding villages. Heshbon was the capital city of Sihon king of the Amorites. He had attacked the former king of Moab and captured all his land as far north as the river Arnon. That is why the folk singers sing, Come to Heshbon to rebuild the city, restore Sihon’s town.