Numbers 32:19

For we would not inherit with them, over the Jordan, and onwards, - because our inheritance hath come unto us on this side the Jordan towards sunrise.

Joshua 13:8

With them, the, Reubenites and the Gadites, received their inheritance, - which Moses gave them beyond the Jordan, eastward, as Moses the servant of Yahweh gave unto them:

Genesis 13:10-12

So Lot lifted up his eyes and beheld all the circuit of the Jordan, that the whole of it, was well-watered, - before Yahweh destroyed Sodom and Gomorrah, like the Garden of Yahweh, like the land of Egypt, as thou enterest into Zoar.

Genesis 14:12

And they took Lot, Abram's brother's son with his goods, and went their way, - he, being a dweller in Sodom.

Numbers 32:32-33

We, will pass over armed, before Yahweh into the land of Canaan, - then shall be ours, the possession of our inheritance across the Jordan.

Numbers 34:15

the two tribes, and the half tribe, have received their inheritance - on this side Jordan near Jericho, eastwards, towards sunrise.

Joshua 1:14-15

Your wives, your little ones, and your cattle, shall remain in the land which Moses hath given you over the Jordan, - but, ye, shall pass over, armed, before your brethren, - all ye mighty men of valour, and shall help them;

Joshua 12:1-6

Now, these, are the kings of the land, whom the sons of Israel had smitten, and of whose land they had taken possession, over the Jordan, towards the rising of the sun, - from the ravine of Arnon, as far as Mount Hermon, and all the waste plain, on the east:

2 Kings 10:32-33

In those days, began Yahweh to make inroads in Israel, - and Hazael smote them in all the boundaries of Israel;

2 Kings 15:29

In the days of Pekah king of Israel, came Tiglath-pileser, king of Assyria, and took Ijon, and Abel-beth-maachah, and Janoah, and Kedesh, and Hazor, and Gilead, and Galilee, all the land of Naphtali - and carried them away captive to Assyria.

1 Chronicles 5:25-26

But they dealt unfaithfully with the God of their fathers, - and went unchastely after the gods of the peoples of the land, whom God destroyed from before them;

Proverbs 20:21

An inheritance hastily gotten at the beginning, the latter end thereof, shall not bring blessing.

Treasury of Scripture Knowledge

Summary

For we will not inherit with them on yonder side Jordan, or forward; because our inheritance is fallen to us on this side Jordan eastward.

Bible References

We will

Genesis 13:10
So Lot lifted up his eyes and beheld all the circuit of the Jordan, that the whole of it, was well-watered, - before Yahweh destroyed Sodom and Gomorrah, like the Garden of Yahweh, like the land of Egypt, as thou enterest into Zoar.
Genesis 14:12
And they took Lot, Abram's brother's son with his goods, and went their way, - he, being a dweller in Sodom.
2 Kings 10:32
In those days, began Yahweh to make inroads in Israel, - and Hazael smote them in all the boundaries of Israel;
2 Kings 15:29
In the days of Pekah king of Israel, came Tiglath-pileser, king of Assyria, and took Ijon, and Abel-beth-maachah, and Janoah, and Kedesh, and Hazor, and Gilead, and Galilee, all the land of Naphtali - and carried them away captive to Assyria.
1 Chronicles 5:25
But they dealt unfaithfully with the God of their fathers, - and went unchastely after the gods of the peoples of the land, whom God destroyed from before them;
Proverbs 20:21
An inheritance hastily gotten at the beginning, the latter end thereof, shall not bring blessing.

Because

Numbers 32:33
So then Moses gave unto them even unto the sons of Gad and unto the sons of Reuben and unto the half tribe of Manasseh son of Joseph the kingdom of sihon, king of the Amorites, and the kingdom of Og, the king of Bashan, the land by her cities with boundaries, even the cities of the land round about.
Joshua 12:1
Now, these, are the kings of the land, whom the sons of Israel had smitten, and of whose land they had taken possession, over the Jordan, towards the rising of the sun, - from the ravine of Arnon, as far as Mount Hermon, and all the waste plain, on the east:
Joshua 13:8
With them, the, Reubenites and the Gadites, received their inheritance, - which Moses gave them beyond the Jordan, eastward, as Moses the servant of Yahweh gave unto them: