Sh'mu'el Bet (2 Sa) 16:21
Sh'mu'el Bet (2 Sa) 16:21 CJB
Achitofel answered Avshalom, “Go in, and sleep with your father’s concubines, the ones he left to take care of the palace. All Isra’el will hear that your father utterly despises you, and this will strengthen the position of all those who are on your side.”