Numbers 32:19

For we will not inherit with them on the other side of the Jordan, and forward; because our inheritance is fallen to us on this side of the Jordan eastward.

Joshua 13:8

With him the Reubenites and the Gadites received their inheritance, which Moses gave them, beyond the Jordan eastward, even as Moses the servant of Jehovah gave them:

Genesis 13:10-12

And Lot lifted up his eyes, and beheld all the Plain of the Jordan, that it was well watered every where, before Jehovah destroyed Sodom and Gomorrah, like the garden of Jehovah, like the land of Egypt, as thou goest unto Zoar.

Genesis 14:12

And they took Lot, Abram's brother's son, who dwelt in Sodom, and his goods, and departed.

Numbers 32:32-33

We will pass over armed before Jehovah into the land of Canaan, and the possession of our inheritance'shall remain with us beyond the Jordan.

Numbers 34:15

the two tribes and the half-tribe have received their inheritance beyond the Jordan at Jericho eastward, toward the sunrising.

Joshua 1:14-15

Your wives, your little ones, and your cattle, shall abide in the land which Moses gave you beyond the Jordan; but ye shall pass over before your brethren armed, all the mighty men of valor, and shall help them;

Joshua 12:1-6

Now these are the kings of the land, whom the children of Israel smote, and possessed their land beyond the Jordan toward the sunrising, from the valley of the Arnon unto mount Hermon, and all the Arabah eastward:

2 Kings 10:32-33

In those days Jehovah began to cut off from Israel: and Hazael smote them in all the borders 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-maacah, and Janoah, and Kedesh, and Hazor, and Gilead, and Galilee, all the land of Naphtali; and he carried them captive to Assyria.

1 Chronicles 5:25-26

And they trespassed against the God of their fathers, and played the harlot after the gods of the peoples of the land, whom God destroyed before them.

Proverbs 20:21

An inheritance may be gotten hastily at the beginning; But the end thereof shall not be blessed.

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
And Lot lifted up his eyes, and beheld all the Plain of the Jordan, that it was well watered every where, before Jehovah destroyed Sodom and Gomorrah, like the garden of Jehovah, like the land of Egypt, as thou goest unto Zoar.
Genesis 14:12
And they took Lot, Abram's brother's son, who dwelt in Sodom, and his goods, and departed.
2 Kings 10:32
In those days Jehovah began to cut off from Israel: and Hazael smote them in all the borders 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-maacah, and Janoah, and Kedesh, and Hazor, and Gilead, and Galilee, all the land of Naphtali; and he carried them captive to Assyria.
1 Chronicles 5:25
And they trespassed against the God of their fathers, and played the harlot after the gods of the peoples of the land, whom God destroyed before them.
Proverbs 20:21
An inheritance may be gotten hastily at the beginning; But the end thereof shall not be blessed.

Because

Numbers 32:33
And Moses gave unto them, even to the children of Gad, and to the children of Reuben, and unto the half-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, according to the cities thereof with their borders, even the cities of the land round about.
Joshua 12:1
Now these are the kings of the land, whom the children of Israel smote, and possessed their land beyond the Jordan toward the sunrising, from the valley of the Arnon unto mount Hermon, and all the Arabah eastward:
Joshua 13:8
With him the Reubenites and the Gadites received their inheritance, which Moses gave them, beyond the Jordan eastward, even as Moses the servant of Jehovah gave them:

American Standard Version Public Domain