Ezekiel 40:9-13

9it was eight cubits deep and its jambs were two cubits thick. The portico of the gateway faced the temple.

10Inside the east gate were three alcoves on each side; the three had the same measurements, and the faces of the projecting walls on each side had the same measurements.

11Then he measured the width of the entrance of the gateway; it was ten cubits and its length was thirteen cubits.

12In front of each alcove was a wall one cubit high, and the alcoves were six cubits square.

13Then he measured the gateway from the top of the rear wall of one alcove to the top of the opposite one; the distance was twenty-five cubits from one parapet opening to the opposite one.