Ezekiel 42:4

2Before the length of an hundred cubits was the north door, and the breadth was fifty cubits.

3Over against the twenty cubits which were for the inner court, and over against the pavement which was for the utter court, was gallery against gallery in three stories.

4And before the chambers was a walk of ten cubits breadth inward, a way of one cubit; and their doors toward the north.

5Now the upper chambers were shorter: for the galleries were higher than these, than the lower, and than the middlemost of the building.

6For they were in three stories, but had not pillars as the pillars of the courts: therefore the building was straitened more than the lowest and the middlemost from the ground.