Deuteronomy 33:6

Let life not death be Reuben's, let not the number of his men be small.

Genesis 49:3-4

Reuben, you are my oldest son, the first-fruit of my strength, first in pride and first in power:

Genesis 49:8

To you, Judah, will your brothers give praise: your hand will be on the neck of your haters; your father's sons will go down to the earth before you.

Numbers 32:31-32

Then the children of Gad and the children of Reuben said, As the Lord has said to your servants, so will we do.

Joshua 22:1-9

Then Joshua sent for the Reubenites and the Gadites and the half-tribe of Manasseh,

Treasury of Scripture Knowledge

Summary

Let Reuben live, and not die; and let not his men be few.

Bible References

General references

Genesis 49:3
Reuben, you are my oldest son, the first-fruit of my strength, first in pride and first in power:
Numbers 32:31
Then the children of Gad and the children of Reuben said, As the Lord has said to your servants, so will we do.
Joshua 22:1
Then Joshua sent for the Reubenites and the Gadites and the half-tribe of Manasseh,

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain