2 Samuel 16:21 - Matthew Poole's English Annotations on the Holy Bible

This counsel he gave, partly to revenge the injury done to Bath-sheba, who was the daughter of Eliam, 2 Samuel 11:3 who was 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 made wide and irreparable by so vile an action which must needs provoke David in the highest degree, both for the sin and shame of it; as the like action had done Jacob, Genesis 49:3,4; and cut off all hopes of reconciliation, which otherwise might have been expected by some treaty between Absalom and his tender-hearted father; in which case his followers, and especially Ahithophel himself, had been left to David's mercy. Israel shall hear that thou art abhorred of thy father; and therefore obliged by thy own interest to prosecute the war with all possible rigour, and to abandon all thoughts of peace; as knowing that his father, though he might dissemble, yet would never forgive so foul and scandalous a crime. 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 reconciliation, which otherwise would make their hearts faint and hands slack in thy cause. But by this we may see the character of Absalom's party, and how abominably wicked they were, whom such a loathsome and scandalous action tied the faster to him, whom for that very reason they should have deserted and abhorred. And we may further learn how corrupt and filthy the body of the people was, and how ripe for that severe judgment which is now hastening to them.