Ezekiel 42:6
for they were in three stories and did not have pillars like the pillars of the [outer] courtyards; therefore the upper chambers were
Ezekiel 41:6
The side chambers were three stories [high], one above another, and thirty chambers in each story; and the side chambers extended to the wall which stood on their inward side all around, so that they would be attached, but not attached to the wall of the temple itself.
1 Kings 6:8
The entrance to the lowest side chamber was on the right [or south] side of the house; and they would go up winding stairs to the middle [level], and from the middle to the third.