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Vision of the Man with a Measuring Rod
17Then he brought me into the outer courtyard, and behold, there were chambers and a stone pavement made for the courtyard all around; thirty chambers faced the pavement. 18And the pavement (that is, the lower pavement) was by the side of the gates, corresponding to the length of the gates. 19Then he measured the width from the front of the lower gate to the front of the exterior of the inner courtyard, a hundred cubits on the east and on the north.
Ezekiel 40:17-19 (NASB)