Joshua 13:8, 10, 24-28

The tribes of Reuben, Gad, and the half-tribe of Manasseh had already received their portion of the land on the east side of the Jordan, which YAHWEH’s servant Moses had assigned to them.

Their territory went as far east as the border of Ammon, including all the cities over which King Sihon, the Amorite king, ruled over from Heshbon.

The land Moses assigned to the families of the tribe of Gad included Jazer, all the cities of Gilead, and half the Ammonite country as far as Aroer, near Rabbah. It extended north from the city of Heshbon to Ramath Mizpah and Betonim, continuing on to the city of Mahanaim, and to the borders of Lo-Debar. 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, Beth Nimrah, Sukkoth, and Zaphon, all of which were in the Jordan Valley. These cities and their surrounding villages comprised the inheritance of the families of the tribe of Gad.