Genesis 49:4

Unstable as water, you shall not excel, because you went up to your father's bed; then you defiled it. He went up to my couch.

Genesis 35:22

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

Deuteronomy 27:20

Cursed is he who lies with his father's wife, because he uncovers his father's skirt. And all the people shall say, Amen.

1 Chronicles 5:1

And the sons of Reuben, the first-born of Israel (for he was the first-born; but since he defiled his father's bed, his birthright was given to the sons of Joseph the son of Israel, and the genealogy is not to be counted according to the birthright;

Genesis 46:8

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

Numbers 32:1-42

And the sons of Reuben and the sons of Gad had a very great multitude of cattle. And when they saw the land of Jazer, and the land of Gilead, behold, the place was a place for cattle.

Deuteronomy 5:21

And you shall not lust after your neighbor's wife, nor shall you covet your neighbor's house, his field, or his manservant, or his maidservant, his ox, or his ass, or any thing that is your neighbor's.

Deuteronomy 33:6

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

1 Corinthians 5:1

On the whole it is reported that there is fornication among you, and such fornication as is not even named among the nations, so as one to have his father's wife.

James 1:6-8

But let him ask in faith, doubting nothing. For he who doubts is like a wave of the sea, driven by the wind and tossed.

2 Peter 2:14

having eyes full of adultery and never ceasing from sin, alluring unstable souls, having a heart exercised with covetousness. They are cursed children

2 Peter 3:16

as also in all his letters, speaking in them of these things; in which are some things hard to be understood, which the unlearned and unstable pervert, as also they do the rest of the 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, doubting nothing. For he who doubts is like a wave of the sea, driven by the wind and tossed.
2 Peter 2:14
having eyes full of adultery and never ceasing from sin, alluring unstable souls, having a heart exercised with covetousness. They are cursed children
2 Peter 3:16
as also in all his letters, speaking in them of these things; in which are some things hard to be understood, which the unlearned and unstable pervert, as also they do the rest of the Scriptures, to their own destruction).

Thou shalt not excel

Genesis 46:8
And these were the names of the sons 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 happened when Israel lived in that land, Reuben went and lay with Bilhah his father's concubine. And Israel heard it. And the sons of Jacob were twelve:
Deuteronomy 5:21
And you shall not lust after your neighbor's wife, nor shall you covet your neighbor's house, his field, or his manservant, or his maidservant, his ox, or his ass, or any thing that is your neighbor's.
Deuteronomy 27:20
Cursed is he who lies with his father's wife, because he uncovers his father's skirt. And all the people shall say, Amen.
1 Chronicles 5:1
And the sons of Reuben, the first-born of Israel (for he was the first-born; but since he defiled his father's bed, his birthright was given to the sons of Joseph the son of Israel, and the genealogy is not to be counted according to the birthright;
1 Corinthians 5:1
On the whole it is reported that there is fornication among you, and such fornication as is not even named among the nations, so as one to have his father's wife.

General references

Leviticus 18:8
You shall not uncover the nakedness of your father's wife. It is your father's nakedness.
Numbers 1:20
And the sons of Reuben, Israel's first-born son, by their generations, according to their families, by their fathers' house, according to the number of the names, by their heads, every male from twenty years old and upward, all that were able to go forth to war:
Deuteronomy 27:20
Cursed is he who lies with his father's wife, because he uncovers 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.