Ahithophel replied, “Sleep with your father’s concubines, whom he has left to keep the palace. When all Israel hears that you have become a stench to your father, then the hands of all who are with you will be strengthened.”
Jewish Publication Society of America Version (JPS1917) - 2 Samuel 16:21 >And Ahithophel said unto Absalom: 'Go in unto thy father's concubines, that he hath left to keep the house; and all Israel will hear that thou art abhorred of thy father; then will the hands of all that are with thee be strong.'