Numbers 32:17
But we ourselves will go ready armed before the children of Israel, until we have brought them unto their place. And our children shall dwell in the fenced cities, because of the inhabiters of the land.
Joshua 4:12-13
And the children of Reuben, and the children of Gad, and half the tribe of Manasseh went before the children of Israel, armed, as Moses charged them.
Numbers 32:29-32
and said unto them, "If the children of Gad and Reuben will go with you over Jordan, all prepared to fight before the LORD: then when the land is subdued unto you, give them the land of Gilead to possess.
Deuteronomy 3:18-20
And I commanded you the same time, ye Reuben and Gad, saying, 'The LORD your God hath given you this land to enjoy it: see that ye go harnessed before your brethren the children of Israel, all that are men of war among you.