New Revised Standard Version
And Moses said to them, “If the Gadites and the Reubenites, everyone armed for battle before the LORD, will cross over the Jordan with you and the land shall be subdued before you, then you shall give them the land of Gilead for a possession;

Contemporary English Version
"Make sure that the tribes of Gad and Reuben prepare for battle and cross the Jordan River with you. If they do, then after the land is in your control, give them the region of Gilead as their tribal land.

New American Bible
He said to them, “If all the Gadites and Reubenites cross the Jordan with you in full force before the LORD into battle, the land will be subdued before you, and you will give them Gilead as a possession.

Douay-Rheims Bible
If the children of Gad, and the children of Ruben pass with you over the Jordan, all armed for war before the Lord, and the land be made subject to you: give them Galaad in possession.

If the children of Gad, and the children of Ruben pass with you over the Jordan, all armed for war before the Lord, and the land be made subject to you: give them Galaad in possession.

Numbers 32:20-23 And Moses said to them: If you do what you promise, go on well appointed for war before the Lord: . . .