Psalms 55:9

No wickedness so distresses the believer, as that which he witnesses in those who profess to be of the church of God. Let us not be surprised at the corruptions and disorders of the church on earth, but long to see the New Jerusalem. He complains of one that had been very industrious against him. God often destroys the enemies of the church by dividing them. And an interest divided against itself cannot long stand. The true Christian must expect trials from professed friends, from those with whom he has been united; this will be very painful; but by looking unto Jesus we shall be enabled to bear it. Christ was betrayed by a companion, a disciple, an apostle, who resembled Ahithophel in his crimes and doom. Both were speedily overtaken by Divine vengeance. And this prayer is a prophecy of the utter, the everlasting ruin, of all who oppose and rebel against the Messiah.

Destroy, O Lord. Put mine enemies to the rout. Let them be devoured by the sword, since they have unsheathed it against me. How could we expect the exiled monarch to offer any other prayer than this against the rebellious bands of Absalom, and the crafty devices of Ahithophel? Divide their tongues. Make another Babel in their debates and councils of war. Set them at cross purposes. Divide the pack that the hunted one may escape. The divisions of error are the hope of truth. For I have seen violence and strife in the city. The rabble and their leaders were plotting and planning, raging and contending against their king, running wild with a thousand mad projects: anarchy had fermented among them, and the king hoped that now it might come to pass that the very lawlessness which had exiled him would create weakness among his foes. Revolution devours its own children. They who are strong through violence, will sooner or later find that their strength is their death. Absalom and Ahithophel may raise the mob, but they cannot so easily rule it, nor so readily settle their own policy as to remain firm friends. The prayer of David was heard, the rebels were soon divided in their councils; Ahithophel went his way to be hanged with a rope, and Absalom to be hanged without one.