1 Chronicles 12:37
The tribes of Reuben and Gad, along with the half-tribe of Manasseh east of the Jordan supplied 120,000 men armed with every kind of war weapon.
Numbers 32:33-42
So Moses gave to the descendants of Gad, to the descendants of Reuben, and to the half-tribe of Joseph's son Manasseh the kingdom of Sihon, the king of the Amorites, and the kingdom of Og, the king of Bashan, the whole land with its cities, and even the territories surrounding it.
Deuteronomy 3:12-16
"Of the land that we captured at that time, I've given its towns to the descendants of Reuben and the descendants of Gad from Aroer near the Wadi Arnon to half of the hill country of Gilead.
Joshua 13:7-32
You only have to allocate the land as an inheritance, just as I commanded you."
Joshua 14:3
since Moses had given the inheritance of the two tribes and the half-tribe across the Jordan River. However, he did not give an inheritance to the descendants of Levi who lived among them,
Joshua 22:1-10
Later, Joshua called together the descendants of Reuben, the descendants of Gad, and the half-tribe of Manasseh
1 Chronicles 5:1-10
Here is a record of the descendants of Reuben, Israel's firstborn. (He was the firstborn, but because he defiled his father's marriage bed, his birthright was transferred to the descendants of Israel's son Joseph. As a result, Reuben is not enrolled in the genealogy according to the birthright.