Ezekiel 42:13-14

13Then the man said to me, ‘These rooms that are on the north and south sides of the temple's inside yard are holy. They are for the priests who serve the Lord in his temple. In these rooms, the priests will eat the most holy sacrifices that they offer to the Lord. They will put the most holy offerings there. It is where they will put the grain offerings, the sin offerings and the guilt offerings. The priests will do that because the rooms are holy.

14When the priests go into the holy place of the temple, they must not leave until they change their clothes. Before they go into the outside yard, they must take off the special clothes that they wear to serve the Lord. Those clothes are holy, so they must put on other clothes. Then they can go out to the places where the people meet.’