Joshua 22:10-11

10Now when they came to the region near the Jordan in the land of Canaan, the children of Reuben, the children of Gad and the half-tribe of Manasseh built there an altar by the Jordan—a large, conspicuous altar.

11Then Bnei-Yisrael heard about it and said: “Behold, the children of Reuben, the children of Gad and the half-tribe of Manasseh have built an altar opposite the land of Canaan, in the region of the Jordan, across from Bnei-Yisrael.”