2 Samuel 15:27-30
27 The king also said to Zadok the priest, “Aren’t you a seer?
Go back to the city in peace, with your son
Ahimaaz and Jonathan son of Abiathar.
You and Abiathar take your two sons with you.
28 I will wait at the fords in the desert until word comes from you to inform me.”
29 So Zadok and Abiathar took the ark of God back to Jerusalem and stayed there.
30 But David continued up the Mount of Olives, weeping as he went;
his head was covered and he was barefoot.
All the people with him covered their heads too
and were weeping as they went up.