Ezekiel 41:5-6

He measured the wall of the house, six cubits Three yards thick was this wall, from the ground to the first story of the side-chambers. And the breadth of every side-chamber, four cubits Of the lowest floor; for there were three stories of these, and they differed in their breadth, as the wall of the temple, on which they rested, abated of its thickness; for the middle chambers were broader than the lowest by a cubit, and the highest as much broader than the middle. The side-chambers were three, one over another They were three stories high; and thirty in order As in Solomon's temple, according to Josephus's description, Antiq., lib. 8. cap. 3, sec. 2, where it appears, that round Solomon's temple were chambers three stories high, each story consisting of thirty chambers. It is supposed that twelve were placed to the north, twelve to the south, and six to the east. And they entered into the wall At five cubits height from the ground, the wall which supported these outward chambers, abated of its thickness one cubit, in consequence of which there was a rest, or a ledge, of one cubit's breadth, on which the ends of each story were fastened: see 1 Kings 6:10. But they had not hold in the wall of the house They were not fastened into the main wall of the house, but rested on the outside of the wall where it became more narrow.