Ezekiel 40:17 KJV

15And from the face of the gate of the entrance unto the face of the porch of the inner gate were fifty cubits.

16And there were narrow windows to the little chambers, and to their posts within the gate round about, and likewise to the arches: and windows were round about inward: and upon each post were palm trees.

17Then brought he me into the outward court, and, lo, there were chambers, and a pavement made for the court round about: thirty chambers were upon the pavement.

18And the pavement by the side of the gates over against the length of the gates was the lower pavement.

19Then he measured the breadth from the forefront of the lower gate unto the forefront of the inner court without, an hundred cubits eastward and northward.