Numbers 32:1-5, 33-42

Now the children of Reuben and the children of Gad had a very great multitude of livestock; and when they saw the land of Jazer and the land of Gilead, that indeed the region was a place for livestock, the children of Gad and the children of Reuben came and spoke to Moses, to Eleazar the priest, and to the leaders of the congregation, saying, “Ataroth, Dibon, Jazer, Nimrah, Heshbon, Elealeh, Shebam, Nebo, and Beon, the country which the LORD defeated before the congregation of Israel, is a land for livestock, and your servants have livestock.” Therefore they said, “If we have found favor in your sight, let this land be given to your servants as a possession. Do not take us over the Jordan.”

So Moses gave to the children of Gad, to the children of Reuben, and to half the tribe of Manasseh the son of Joseph, the kingdom of Sihon king of the Amorites and the kingdom of Og king of Bashan, the land with its cities within the borders, the cities of the surrounding country. And the children of Gad built Dibon and Ataroth and Aroer, Atroth and Shophan and Jazer and Jogbehah, Beth Nimrah and Beth Haran, fortified cities, and folds for sheep. And the children of Reuben built Heshbon and Elealeh and Kirjathaim, Nebo and Baal Meon (their names being changed) and Shibmah; and they gave other names to the cities which they built. And the children of Machir the son of Manasseh went to Gilead and took it, and dispossessed the Amorites who were in it. So Moses gave Gilead to Machir the son of Manasseh, and he dwelt in it. Also Jair the son of Manasseh went and took its small towns, and called them Havoth Jair. Then Nobah went and took Kenath and its villages, and he called it Nobah, after his own name.