To avoid confusion, the pronoun it may need to be translated “their territory.” Moreover, Beth Haram, Bethnimrah, Sukkoth, and Zaphon may need to be identified as cities. It is possible also to translate verses 26-27 as a unit:

• Their land included the rest of the territory that had belonged to King Sihon of the Amorites. It extended north from the city of Heshbon and took in the cities of Ramath Mizpeh and Betonim. It continued as far as the city of Mahanaim and over to the borders of Lodebar. In addition, the tribe of Gad received the land along the eastern side of the Jordan River as far north as the southern end of Lake Galilee. This included the cities of Beth Haram, Bethnimrah, Sukkoth, and Zaphon, which were in the Jordan Valley.

Quoted with permission from Bratcher, Robert G. and Newman, Barclay M. A Handbook on Joshua. (UBS Helps for Translators). New York: UBS, 1983. For this and other handbooks for translators see here .