Joshua 22:9-12 - Eastern Tribes Build An Altar
9 And the sons of Reuben and the sons of Gad and the half tribe of Manasseh returned. And they departed from the sons of Israel out of Shiloh, which is in the land of Canaan, to go to the land of Gilead, to the land of their possession, in which they have possession, according to the Word of Jehovah by the hand of Moses. 10 And when they came to the borders of Jordan in the land of Canaan, the sons of Reuben and the sons of Gad and the half tribe of Manasseh built an altar of grand appearance there by Jordan.
11 And the sons of Israel heard, Behold, the sons of Reuben and the sons of Gad and the half tribe of Manasseh have built an altar opposite the land of Canaan, in the borders of Jordan, at the passage of the sons of Israel. 12 And when the sons of Israel heard, the whole congregation of the sons of Israel gathered themselves at Shiloh to go to war against them.