Ezekiel 40:46-50

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 among the sons of Levi, which come near to the LORD to minister unto him.

So he measured the court, an hundred cubits long, and an hundred cubits broad, foursquare; and the altar that was before the house.

And 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.

The length of the porch was twenty cubits, and the breadth eleven cubits; and he brought me by the steps whereby they went up to it: and there were pillars by the posts, one on this side, and another on that side.