Yechezkel 41:4-6

Orthodox Jewish Bible

⁴ So he measured the depth thereof, twenty cubits; and the width, twenty cubits, along the Heikhal; and he [the angelic being] said unto me, This is the Kodesh HaKodashim.

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].