Ezekiel 42:13-14

13Then he said to me, “The north chambers and the south chambers, which are opposite the separating courtyard, are the holy chambers where the priests who approach the Lord shall eat the most holy offerings. There they shall lay the most holy offerings—the grain offering, the sin offering, and the trespass offering—for the place is holy.

14When the priests enter them, they shall not go out of the holy chamber into the outer court; but there they shall leave their garments in which they minister, for they are holy. They shall put on other garments; then they may approach that which is for the people.”