So Zadok and Abiathar returned the ark of God to Jerusalem and stayed there.
Here we have, I. The fidelity of the priests and Levites and their firm adherence to David and his interest. They knew David's great affection to them and their office, notwithstanding his failings. The method Absalom took to gain people's affections made no impression upon them; he had little religion in him, and therefore they steadily adhered to David.
Commenting on 2 Samuel 15:24-30
Zadok therefore and Abiathar carried the ark of God again to Jerusalem,.... That is, ordered it to be carried, and took care that it was carried, by the Kohathite Levites, and they themselves attended it: and they tarried there; at Jerusalem; though their two sons that went with them entered not into the city, but stayed at a place called Enrogel, at some little distance from it, Sa2 17:17.
2Sa 15:29 Zadok and Abiathar then returned to the city with the ark of God.