Ezekiel 40:44-46

44There were two rooms for singers that had doors to the inside yard. One was beside the north gate and its door opened towards the south. The other room was beside the south gate and its door opened towards the north.

45The man said to me, ‘The room beside the north gate is for the priests who take care of the temple.

46The room beside the south gate is for the priests who serve God at the altar. These priests are descendants of Zadok. They are the only descendants of Levi who may come near to the Lord to serve him.’