II Samuel 15:13-37 David Flees The City, But Leaves Behind Friends.
Due to Absalom’s long political scheming, David and those loyal to him are forced to cross the brook Kidron and flee to the wilderness. This was a reversal event of sorts, of the earlier deliverance from the wilderness into the promised land. They were initially accompanied by “Zadok also, and all the Levites with him, bearing the ark of the covenant” (v. 24), but David sent him and his two sons back to Jerusalem and was willing to let the verdict of the LORD, in word and deed, to determine its and his own future together. Besides, Zadok was not a Seer, one who David could turn to for a word from the LORD (v. 27).
David, barefoot and head bowed, went up the Ascent of the Mount of Olives, and when he learned that his long time counsellor Ahithophel was with Absalom, he knew that his only hope was to pray that the LORD would turn his counsel into foolishness (v. 31). Sometimes we need to pray to the LORD asking him to thwart the counsel of those who seek our destruction. David knew that Ahithophel’s counsel was always wise, so in this case the LORD provided a spy in the person of Hushai the Archite, whom David instructed to thwart Ahithophel’s counsel (vv. 32-34). With Zadok and Abiathar, and their two sons, David had friends who Hushai could conspire with and bring him news.