Reference

Ezekiel 42:7

And the wall that was without over against the chambers, toward the utter court on the forepart of the chambers, the length thereof was fifty cubits.
5

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

6

For 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.

7

And the wall that was without over against the chambers, toward the utter court on the forepart of the chambers, the length thereof was fifty cubits.

8

For the length of the chambers that were in the utter court was fifty cubits: and, lo, before the temple were an hundred cubits.

9

And from under these chambers was the entry on the east side, as one goeth into them from the utter court.