But if they don't get themselves ready for battle and cross over with you, then they must accept their allotted land among you in the country of Canaan.”
Moses told them, “If the tribes of Gad and Reuben cross the Jordan with you, with all their troops ready for battle with the Lord's help, and the land is conquered as you advance, then give them the land of Gilead to own.
But if you think your land is tainted then come over to the land of the Lord where the Tabernacle of the Lord is located and share some of our land with us. Just don't rebel against the Lord, or against us, by building for yourselves an altar other than the altar of the Lord our God.