and the chamber that faces north is for the priests who keep charge of the altar. These are the sons of Zadok, the only Levites who may approach the LORD to minister before Him.”
Jewish Publication Society of America Version (JPS1917) - Ezekiel 40:46 >And the chamber whose prospect is toward the north is for the priests, the keepers of the charge of the altar; these are the sons of Zadok, who from among the sons of Levi come near to the LORD to minister unto Him.'