Joshua 22:9-10

9The sons of Reuben and the sons of Gad and the half-tribe of Manasseh returned home and departed from the sons of Israel at Shiloh which is in the land of Canaan, to go to the 1land of Gilead, to the land of their possession which they had possessed, according to the 2command of the Lord 3through Moses.

10When 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, a large altar in appearance.