the Tribe of Reuben: Obtained Inheritance East of Jordan on Condition of Helping
Source: TTT
Numbers 32:1–33
Now the Reubenites and Gadites, who had very large herds and flocks, surveyed the lands of Jazer and Gilead, and they saw that the region was suitable for livestock. / So the Gadites and Reubenites came to Moses, Eleazar the priest, and the leaders of the congregation, and said, / “Ataroth, Dibon, Jazer, Nimrah, Heshbon, Elealeh, Sebam, Nebo, and Beon,
Deuteronomy 3:18–20
At that time I commanded you: “The LORD your God has given you this land to possess. All your men of valor are to cross over, armed for battle, ahead of your brothers, the Israelites. / But your wives, your children, and your livestock—I know that you have much livestock—may remain in the cities I have given you, / until the LORD gives rest to your brothers as He has to you, and they too have taken possession of the land that the LORD your God is giving them across the Jordan. Then each of you may return to the possession I have given you.”