21 all the towns on the plateau and the entire realm of Sihon king of the Amorites, who ruled at Heshbon. Moses had defeated him and the Midianite chiefs, Evi, Rekem, Zur, Hur and Reba—princes allied with Sihon—who lived in that country.

Read Joshua 13:21 Using Other Translations

And all the cities of the plain, and all the kingdom of Sihon king of the Amorites, which reigned in Heshbon, whom Moses smote with the princes of Midian, Evi, and Rekem, and Zur, and Hur, and Reba, which were dukes of Sihon, dwelling in the country.
that is, all the cities of the tableland, and all the kingdom of Sihon king of the Amorites, who reigned in Heshbon, whom Moses defeated with the leaders of Midian, Evi and Rekem and Zur and Hur and Reba, the princes of Sihon, who lived in the land.
The land of Reuben also included all the towns of the plain and the entire kingdom of Sihon. Sihon was the Amorite king who had reigned in Heshbon and was killed by Moses along with the leaders of Midian—Evi, Rekem, Zur, Hur, and Reba—princes living in the region who were allied with Sihon.