Joshua 13:8

With the other half-tribe [of Manasseh], the Reubenites and the Gadites received their inheritance which Moses gave them beyond the Jordan eastward, just as Moses the servant of the Lord gave to them;

Joshua 12:6

Moses the servant of the Lord and the sons of Israel defeated them; and Moses the servant of the Lord gave their land as a possession to the Reubenites and the Gadites and the half-tribe of Manasseh.

Numbers 32:33-42

So Moses gave to them, to the sons of Gad and to the sons of Reuben and to the half-tribe of Manasseh the son of Joseph, the kingdom of Sihon, the king of the Amorites and the kingdom of Og, the king of Bashan, the land with its cities and territories, the cities of the surrounding land.

Deuteronomy 3:12-17

“So we took possession of this land at that time. I gave the territory from Aroer, which is by the valley of the Arnon, along with half of the hill country of Gilead and its cities to the Reubenites and to the Gadites.

Joshua 4:12

The sons of Reuben and the sons of Gad and half the tribe of Manasseh crossed over armed for battle before the [other] sons of Israel, just as Moses had spoken to them;

Joshua 22:4

And now the Lord your God has given rest to your brothers, as He has promised them; so turn now and go to your tents, to the land of your possession, which Moses the servant of the Lord gave you beyond the [east side of the] Jordan.

Treasury of Scripture Knowledge

Summary

With whom the Reubenites and the Gadites have received their inheritance, which Moses gave them, beyond Jordan eastward, even as Moses the servant of the LORD gave them;

Bible References

Moses gave

Joshua 4:12
The sons of Reuben and the sons of Gad and half the tribe of Manasseh crossed over armed for battle before the [other] sons of Israel, just as Moses had spoken to them;
Joshua 22:4
And now the Lord your God has given rest to your brothers, as He has promised them; so turn now and go to your tents, to the land of your possession, which Moses the servant of the Lord gave you beyond the [east side of the] Jordan.
Numbers 32:33
So Moses gave to them, to the sons of Gad and to the sons of Reuben and to the half-tribe of Manasseh the son of Joseph, the kingdom of Sihon, the king of the Amorites and the kingdom of Og, the king of Bashan, the land with its cities and territories, the cities of the surrounding land.
Deuteronomy 3:12
“So we took possession of this land at that time. I gave the territory from Aroer, which is by the valley of the Arnon, along with half of the hill country of Gilead and its cities to the Reubenites and to the Gadites.

General references

Genesis 49:19

“As for Gad—a raiding troop shall raid him,
But he shall raid at their heels and assault them [victoriously].
Numbers 21:31
Thus Israel settled in the land of the Amorites.
Numbers 34:14
for the tribe of the sons of Reuben and the tribe of the sons of Gad have received their inheritance by their fathers’ households, and the half-tribe of Manasseh have received their possession.
Judges 11:19
Then Israel sent messengers to Sihon king of the Amorites, king of Heshbon, and Israel said to him, “Please let us pass through your land to our place.”