Genesis 49:3-4

New King James Version

³ “Reuben, you are ^(A)my firstborn,
My might and the beginning of my strength,
The excellency of dignity and the excellency of power.
⁴ Unstable as water, you shall not excel,
Because you ^(B)went up to your father’s bed;
Then you defiled it—
He went up to my couch.