The guide brings Ezekiel to the priests' chambers ranged on the north and south of the separate place — three-storied galleries built into the thickness of the wall, with measured walks and doors opening toward the inner court. These are named holy chambers, set apart for the priests who approach Jehovah to eat the most holy things and to lay up the meat offering, sin offering, and trespass offering. The priests must change garments before passing back to the outer court, for the ministering vestments are holy and may not be carried among the people. The whole compound is then measured five hundred reeds on every side, a wall making separation between the sanctuary and the profane. The pattern is the Holy Order's: graded access, consecrated garments, and a measured boundary that distinguishes what is set apart from what is common.