2 Samuel 15:27-30, 32-36

The king directed Zadok the priest, “Here’s the plan: Return to the city peacefully, with Ahimaaz your son and Jonathan, Abiathar’s son, with you. I’ll wait at a spot in the wilderness across the river, until I get word from you telling us what’s up.” So Zadok and Abiathar took the Chest of God back to Jerusalem and placed it there, while David went up the Mount of Olives weeping, head covered but barefooted, and the whole army was with him, heads covered and weeping as they ascended.

As David approached the top of the hill where God was worshiped, Hushai the Arkite, clothes ripped to shreds and dirt on his head, was there waiting for him. David said, “If you come with me, you’ll be just one more piece of luggage. Go back to the city and say to Absalom, ‘I’m ready to be your servant, O King; I used to be your father’s servant, now I’m your servant.’ Do that and you’ll be able to confuse Ahithophel’s counsel for me. The priests Zadok and Abiathar are already there; whatever information you pick up in the palace, tell them. Their two sons—Zadok’s son Ahimaaz and Abiathar’s son Jonathan—are there with them—anything you pick up can be sent to me by them.”