וַיָּ֨שֶׁב צָד֧וֹק וְאֶבְיָתָ֛ר אֶת־אֲר֥וֹן הָאֱלֹהִ֖ים יְרוּשָׁלִָ֑ם וַיֵּשְׁב֖וּ שָֽׁם׃
Zadok therefore and Abiathar carried the ark of God back to Jerusalem; and they abode there.
Read kabbalistic (mystical) interpretation of II Samuel 15:29: and classical mystical sources.