Read Genesis 49:4 Using Other Translations
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.
Unstable as water, you shall not have preeminence, because you went up to your father's bed; then you defiled it--he went up to my couch!
But you are as unruly as a flood, and you will be first no longer. For you went to bed with my wife; you defiled my marriage couch.