Ezekiel 40:44-46

Inside the inner courtyard were two rooms, one beside the north gateway, facing south, and the other beside the south gateway, facing north. And the man said to me, “The room beside the north inner gate is for the priests who supervise the Temple maintenance. The room beside the south inner gate is for the priests in charge of the altar—the descendants of Zadok—for they alone of all the Levites may approach the LORD to minister to him.”