Genesis 49:4

Unstable as water, thou shalt not excel; because thou wentest up to thy father's bed; then defiledst thou it; he went up to my couch.

Genesis 35:22

And it came to pass, when Israel dwelt in that land, that Reuben went and lay with Bilhah his father's concubine: and Israel heard it. Now the sons of Jacob were twelve:

Deuteronomy 27:20

Cursed be he that lieth with his father's wife; because he uncovereth his father's skirt: and all the people shall say, Amen.

1 Chronicles 5:1

Now the sons of Reuben the first-born of Israel, (for he was the first-born; but, forasmuch as he defiled his father's bed, his birth-right was given to the sons of Joseph the son of Israel: and the genealogy is not to be reckoned after the birth-right.

Genesis 46:8

And these are the names of the children of Israel, who came into Egypt, Jacob and his sons: Reuben, Jacob's first-born.

Numbers 32:1-42

Now the children of Reuben and the children of Gad had a very great multitude of cattle: and when they saw the land of Jazer, and the land of Gilead, that behold, the place was a place for cattle;

Deuteronomy 5:21

Neither shalt thou desire thy neighbor's wife, neither shalt thou covet thy neighbor's house, his field, or his man-servant, or his maid-servant, his ox, or his ass, or any thing that is thy neighbor's.

Deuteronomy 33:6

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

1 Corinthians 5:1

It is reported commonly that there is lewdness among you, and such lewdness as is not so much as named among the Gentiles, that one should have his father's wife.

James 1:6-8

But let him ask in faith, nothing wavering. For he that wavereth is like a wave of the sea driven with the wind and tossed.

2 Peter 2:14

Having eyes full of adultery, and that cannot cease from sin; beguiling unstable souls: they have a heart exercised with covetous practices; cursed children:

2 Peter 3:16

As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, to their own destruction.

Treasury of Scripture Knowledge

Summary

Unstable as water, thou shalt not excel; because thou wentest up to thy father's bed; then defiledst thou it: he went up to my couch.

Thou shalt not excel

Bible References

Unstable

James 1:6
But let him ask in faith, nothing wavering. For he that wavereth is like a wave of the sea driven with the wind and tossed.
2 Peter 2:14
Having eyes full of adultery, and that cannot cease from sin; beguiling unstable souls: they have a heart exercised with covetous practices; cursed children:
2 Peter 3:16
As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, to their own destruction.

Thou shalt not excel

Genesis 46:8
And these are the names of the children of Israel, who came into Egypt, Jacob and his sons: Reuben, Jacob's first-born.
Deuteronomy 33:6
Let Reuben live, and not die; and let not his men be few.

Because

Genesis 35:22
And it came to pass, when Israel dwelt in that land, that Reuben went and lay with Bilhah his father's concubine: and Israel heard it. Now the sons of Jacob were twelve:
Deuteronomy 5:21
Neither shalt thou desire thy neighbor's wife, neither shalt thou covet thy neighbor's house, his field, or his man-servant, or his maid-servant, his ox, or his ass, or any thing that is thy neighbor's.
Deuteronomy 27:20
Cursed be he that lieth with his father's wife; because he uncovereth his father's skirt: and all the people shall say, Amen.
1 Chronicles 5:1
Now the sons of Reuben the first-born of Israel, (for he was the first-born; but, forasmuch as he defiled his father's bed, his birth-right was given to the sons of Joseph the son of Israel: and the genealogy is not to be reckoned after the birth-right.
1 Corinthians 5:1
It is reported commonly that there is lewdness among you, and such lewdness as is not so much as named among the Gentiles, that one should have his father's wife.

General references

Leviticus 18:8
The nakedness of thy father's wife shalt thou not uncover: it is thy father's nakedness.
Numbers 1:20
And the children of Reuben, Israel's eldest son, by their generations, after their families, by the house of their fathers, according to the number of the names, by their polls, every male from twenty years old and upward, all that were able to go forth to war;
Deuteronomy 27:20
Cursed be he that lieth with his father's wife; because he uncovereth his father's skirt: and all the people shall say, Amen.
Deuteronomy 33:6
Let Reuben live, and not die; and let not his men be few.