Ezekiel 40:10-16

10And there were three side rooms on either side of the east gate. The three were of the same size, and the jambs on either side were of the same size. 11Then he measured the width of the opening of the gateway, ten cubits; and the length of the gateway, thirteen cubits. 12There was a barrier before the side rooms, one cubit on either side. And the side rooms were six cubits on either side. 13Then he measured the gate from the ceiling of the one side room to the ceiling of the other, a breadth of twenty-five cubits; the openings faced each other. 14He measured also the vestibule, sixty cubits. And around the vestibule of the gateway was the court. 15From the front of the gate at the entrance to the front of the inner vestibule of the gate was fifty cubits. 16And the gateway had windows all around, narrowing inwards toward the side rooms and toward their jambs, and likewise the vestibule had windows all around inside, and on the jambs were palm trees.