Yechezkel 41:5-7

Orthodox Jewish Bible

⁵ After he [the angelic being] measured the wall of the Beis [HaMikdash], six cubits; and the width of every tzela (side chamber, cell), four cubits, around the Beis [HaMikdash] on every side.

⁶ And the tzela’ot (side chambers, cells) were tzela over tzela, thirty-three in number; and there were ledges on the wall which was of the Beis for the tzela’ot round about, that they might take hold there, but they had not hold in the wall of the Beis [HaMikdash].

⁷ And tzela’ot (side chambers, cells) were broader at each story; a ramp spiraled upward by stages around the Beis [HaMikdash]; therefore the width of the Beis increased as it went upward, so from the lowest to the highest through the middle.