Joshua 22:9-10

9So the children of Reuben, the children of Gad, and half the tribe of Manasseh returned, and departed from the children of Israel at Shiloh, which is in the land of Canaan, to go to the country of Gilead, to the land of their possession, which they had obtained according to the word of the Lord by the hand of Moses.

10And when they came to the region of the Jordan which is in the land of Canaan, the children of Reuben, the children of Gad, and half the tribe of Manasseh built an altar there by the Jordan—a great, impressive altar.