Joshua 13:8

with whom the Reubenites and the Gadites have received their inheritance which Moses gave them beyond Jordan eastward, as Moses the servant of Jehovah gave them,

Joshua 12:6

Moses the servant of Jehovah and the sons of Israel struck them. And Moses the servant of Jehovah gave it for a possession to the Reubenites, and the Gadites, and the half tribe of Manasseh.

Numbers 32:33-42

And Moses gave to them, to the sons of Gad and to the sons of Reuben, and to the half the tribe of Manasseh the son of Joseph, the kingdom of Sihon king of the Amorites, and the kingdom of Og king of Bashan, the land with its cities in the borders, the cities of the land all around.

Deuteronomy 3:12-17

And this is the land which we possessed at that time, from Aroer by the river Arnon, and half of Mount Gilead, and its cities, I gave to the men of Reuben and of Gad.

Joshua 4:12

And the sons of Reuben, and the sons of Gad, and half the tribe of Manasseh, passed over armed in front of the sons of Israel, as Moses spoke to them;

Joshua 22:4

And now Jehovah your God has given rest to your brothers, as He spoke to them. And now turn and go to your tents, to the land of your possession, which Moses the servant of Jehovah has given to you beyond 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
And the sons of Reuben, and the sons of Gad, and half the tribe of Manasseh, passed over armed in front of the sons of Israel, as Moses spoke to them;
Joshua 22:4
And now Jehovah your God has given rest to your brothers, as He spoke to them. And now turn and go to your tents, to the land of your possession, which Moses the servant of Jehovah has given to you beyond the Jordan.
Numbers 32:33
And Moses gave to them, to the sons of Gad and to the sons of Reuben, and to the half the tribe of Manasseh the son of Joseph, the kingdom of Sihon king of the Amorites, and the kingdom of Og king of Bashan, the land with its cities in the borders, the cities of the land all around.
Deuteronomy 3:12
And this is the land which we possessed at that time, from Aroer by the river Arnon, and half of Mount Gilead, and its cities, I gave to the men of Reuben and of Gad.

General references

Genesis 49:19
Gad, raiders shall attack him, and he shall attack their heel.
Numbers 21:31
So Israel lived in the land of the Amorites.
Numbers 34:14
For the tribe of the sons of Reuben according to the house of their fathers, and the tribe of the sons of Gad according to the house of their fathers. And half the tribe of Manasseh have received their inheritance.
Judges 11:19
And Israel sent messengers to Sihon king of the Amorites, the king of Heshbon. And Israel said to him, We pray you, let us pass through your land to my place.