Ezekiel 40:6 CEV

[6] Then he went to the east gate, where he walked up steps that led to a long passageway. On each side of this passageway were three guardrooms, which were ten feet square, and they were separated by walls over eight feet thick. The man measured the distance between the opening of the gate and the first guardroom, and it was ten feet, the thickness of the outer wall. At the far end of this passageway, I saw an entrance room that faced the courtyard of the temple itself. There was also a distance of ten feet between the last guardroom and the entrance room