2 Samuel 16:21

Go in unto thy father's concubines This counsel he gave, partly to revenge the injury done to Bath-sheba, the daughter of Eliam, chap. 2 Samuel 11:3; the son of Ahithophel, 2 Samuel 23:34; and principally for his own and the people's safety, that the breach between David and Absalom might be irreparable. For this, he foresaw, would provoke David in the highest degree, and cut off all hope of reconciliation, which otherwise might have been expected to take place, by some treaty between Absalom and his tender-hearted father. But in that case his followers, and especially Ahithophel, would have been left to David's mercy. That thou art abhorred of thy father And, therefore, art obliged to prosecute the war with all vigour, and to abandon all thoughts of peace; as knowing that thy father, though he may dissemble, yet will never forgive such an act. Then shall the hands of all that are with thee be strong They will fight with greater courage and resolution when they are freed from the fear of thy being ever reconciled to thy father, and see they are out of all danger of being sacrificed to any future treaty of peace or agreement between you. “An advice,” says Delaney, “for the present, and in appearance, wise; but in reality pernicious. Could not this long-headed, sagacious statesman foresee, that this action, for which some men would now become more attached to Absalom, must one day make him detestable in their eyes, when they reflected upon the horror of it? a guilt made mortal by the law of God, Leviticus 20:11, and not named even among the Gentiles; a guilt for which they must one day judge him more worthy to lose his crown than Reuben his birth-right. However, this hellish advice was immediately embraced.”