For Heshbon was the city of King Sihon of the Amorites. Now he had fought against the former king of Moab and had taken all of his land from his control, as far as the Arnon.
TSK
TSK · Joshua 13:16
Treasury of Scripture Knowledge references in NET.
Land Assignment So Moses gave to the Gadites, the Reubenites, and to half the tribe of Manasseh son of Joseph the realm of King Sihon of the Amorites, and the realm of King Og of Bashan, the entire land with its cities and the territory surrounding them.
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.
Now Moses had assigned land to the two and a half tribes east of the Jordan, but he assigned no land to the Levites.
Israel has been living in Heshbon and its nearby towns, in Aroer and its nearby towns, and in all the cities along the Arnon for three hundred years! Why did you not reclaim them during that time?
The people of Heshbon and Elealeh cry out, their voices are heard as far away as Jahaz. For this reason Moab’s soldiers shout in distress; their courage wavers.
“Judgment will come on the cities on the high plain: on Holon, Jahzah, and Mephaath,