the Tribe of Reuben: Obtained Inheritance East of Jordan on Condition of Helping

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. …

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. …