15:31-37 David prays not against Ahithophel's person, but against his counsel. He prayed this, in firm belief that God has all hearts in his hand, and tongues also. But we must second our prayers with endeavours, and David did so, else we tempt God. But we do not find wisdom and simplicity so united in any mere man, that we can perceive nothing which needs forgiveness. Yet, when the Son of David was treated with all possible treachery and cruelty, his wisdom, meekness, candour, and patience, were perfect. Him let us follow, cleave to, and serve, in life and in death.Behold, they have there with them two sons, Ahimaaz, Zadok's son, and Jonathan, Abiathar's son,.... As in 2 Samuel 15:27; not that they were in the city with them, but they were near it, 2 Samuel 17:17; with whom they had a communication:

and by whom ye shall send unto me everything that ye can hear; that is, by the sons of the priests; he telling the priests how things were at court, and they sending their sons with messages to David; which was a good scheme to get intelligence, and easy to be put into execution.