Numbers 32:21–33

²¹and every one of your armed men crosses the Jordan before the Lord until he has driven his enemies from his presence, ²²and the land is subdued before the Lord—afterward you may return and be free from obligation to the Lord and to Israel. And this land will belong to you as a possession before the Lord. ²³But if you don’t do this, you will certainly sin against the Lord; be sure your sin will catch up with you. ²⁴Build cities for your dependents and pens for your flocks, but do what you have promised.”^r

²⁵The Gadites and Reubenites answered Moses, “Your servants will do just as my lord commands. ²⁶Our dependents, wives, livestock, and all our animals will remain here in the cities of Gilead, ²⁷but your servants are equipped for war before the Lord and will go across to the battle as my lord orders.”

²⁸So Moses gave orders about them to the priest Eleazar, Joshua son of Nun, and the family heads of the Israelite tribes. ²⁹Moses told them, “If the Gadites and Reubenites cross the Jordan with you, every man in battle formation before the Lord, and the land is subdued before you, you are to give them the land of Gilead as a possession.^{s 30}But if they don’t go across with you in battle formation, they must accept land in Canaan with you.”

³¹The Gadites and Reubenites replied, “What the Lord has spoken to your servants is what we will do. ³²We will cross over in battle formation before the Lord into the land of Canaan, but we will keep our hereditary possession across the Jordan.”

³³So Moses gave them—the Gadites, Reubenites, and half the tribe of Manasseh son of Joseph—the kingdom of King Sihon of the Amorites and the kingdom of King Og of Bashan, the land including its cities with the territories surrounding them.^a