Thematic Bible: Erect a monument to signify the unity of the tribes east of the jordan river with the tribes west of the river

And when they came to the region of the Jordan in the land of Canaan, the Reubenites, Gadites, and the half-tribe of Manasseh built there an altar by the Jordan, an altar great to behold. And the [other] Israelites heard it said, Behold, the Reubenites, Gadites, and the half-tribe of Manasseh have built an altar at the edge of the land of Canaan in the region [west] of the Jordan in the passage [belonging to us], the Israelites. When the Israelites heard of it, the whole congregation of the sons of Israel gathered at Shiloh to make war on them. read more.
And the [other] Israelites sent to the Reubenites, Gadites, and the half-tribe of Manasseh, in the land of Gilead, Phinehas son of Eleazar, the priest, And with him ten chiefs, one from each of the tribal families of Israel; and each one was a head of a father's house among the clans of Israel.