Ezekiel 40:45-46

45He said to me, “This is the 1chamber which faces toward the south, intended for the priests who 2keep charge of the 3temple;

46but the 4chamber which faces toward the north is for the priests who 5keep charge of the altar. These are the 6sons of Zadok, who from the sons of Levi 7come near to the Lord to minister to Him.”