Ezekiel 40:46-48

American Standard Version

⁴⁶ and the chamber whose prospect is toward the north is for the priests, the keepers of the charge of the altar: these are the sons of Zadok, who from among the sons of Levi come near to Jehovah to minister unto him. ⁴⁷ And he measured the court, a hundred cubits long, and a hundred cubits broad, foursquare; and the altar was before the house.

⁴⁸ Then he brought me to the porch of the house, and measured each post of the porch, five cubits on this side, and five cubits on that side: and the breadth of the gate was three cubits on this side, and three cubits on that side.