Joshua 22:9-12 - Eastern Tribes Build An Altar

⁹ So the sons (descendants) of Reuben and the sons of Gad and the half-tribe of Manasseh returned home and departed from the [other] sons (western tribes) of Israel at Shiloh which is in the land of Canaan, to go to the land of Gilead, to the land of their own which they had possessed, in accordance with the command of the Lord through Moses. ¹⁰ When they came to the region of the Jordan which is in the land of Canaan, the sons of Reuben and the sons of Gad and the half-tribe of Manasseh built an altar there by the Jordan, an altar that was great to behold.

¹¹ And the [other] sons of Israel heard it said, “Look, the sons of Reuben and the sons of Gad 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, on the side belonging to the sons of Israel.” ¹² When the sons of Israel heard of it, the whole congregation of the Israelites gathered at Shiloh to make war against them.