2 Samuel 15:27-37
15:27 The king said to Zadok the priest, “Are you a seer? Go back to the city in peace! Your son Ahimaaz and Abiathar’s son Jonathan may go with you and Abiathar.
15:28 Look, I will be waiting at the fords of the desert until word from you reaches me.”
15:29 So Zadok and Abiathar took the ark of God back to Jerusalem and remained there.
15:30 As David was going up the Mount of Olives, he was weeping as he went; his head was covered and his feet were bare. All the people who were with him also had their heads covered and were weeping as they went up.
15:31 Now David had been told, “Ahithophel has sided with the conspirators who are with Absalom. So David prayed, “Make the advice of Ahithophel foolish, O Lord!”
15:32 When David reached the summit, where he used to worship God, Hushai the Arkite met him with his clothes torn and dirt on his head.
15:33 David said to him, “If you leave with me you will be a burden to me.
15:34 But you will be able to counter the advice of Ahithophel if you go back to the city and say to Absalom, ‘I will be your servant, O king! Previously I was your father’s servant, and now I will be your servant.’
15:35 Zadok and Abiathar the priests will be there with you. Everything you hear in the king’s palace you must tell Zadok and Abiathar the priests.
15:36 Furthermore, their two sons are there with them, Zadok’s son Ahimaaz and Abiathar’s son Jonathan. You must send them to me with any information you hear.”
15:37 So David’s friend Hushai arrived in the city, just as Absalom was entering Jerusalem.