Genesis 49:4

4 Boiling over as water, thou shalt not have the pre-eminence; Because thou wentest up to thy father's bed; Then defiledst thou it: he went up to my couch.

Genesis 49:4 In-Context

2 Assemble yourselves, and hear, ye sons of Jacob; And hearken unto Israel your father.
3 Reuben, thou art my first-born, my might, and the beginning of my strength; The pre-eminence of dignity, and the pre-eminence of power.
4 Boiling over as water, thou shalt not have the pre-eminence; Because thou wentest up to thy father's bed; Then defiledst thou it: he went up to my couch.
5 Simeon and Levi are brethren; Weapons of violence are their swords.
6 O my soul, come not thou into their council; Unto their assembly, my glory, be not thou united; For in their anger they slew a man, And in their self-will they hocked an ox.
The American Standard Version is in the public domain.