Ezekiel 40:44-48

From the outside to the inner gate were chambers for the singers in the inner courtyard, one of which was at the side of the north gate, with its front toward the south, and one at the side of the south gate facing north.

Then he said to me, “This is the chamber which faces south, intended for the priests who are responsible for the temple;

but the chamber which faces north is for the priests who are responsible for the altar. They are the sons of Zadok, who from the sons of Levi come near to the Lord to serve Him.”

He measured the courtyard, a perfect square, a hundred cubits long and a hundred cubits wide; and the altar was in front of the temple.

Then he brought me to the porch of the temple and measured each side pillar of the porch, five cubits on each side; and the width of the gate was three cubits on each side.