Numbers 32
29 Moses said to them, If the children of Gad and the children of Reuben will pass with you over the Jordan, every man who is armed to battle, before Yahweh, and the land shall be subdued before you; then you shall give them the land of Gilead for a possession:
30 Ref but if they will not pass over with you armed, they shall have possessions among you in the land of Canaan.
31 The children of Gad and the children of Reuben answered, saying, As Yahweh has said to your servants, so will we do.
32 We will pass over armed before Yahweh into the land of Canaan, and the possession of our inheritance [shall remain] with us beyond the Jordan.