For they were in three stories, but had not pillars as the pillars of the courts: therefore the building was straitened more than the lowest and the middlemost from the ground.
Ezekiel 41:6
And the side-chambers [are] side-chamber by side-chamber, three and thirty times; and they are entering into the wall -- which the house hath for the side-chambers all round about -- to be taken hold of, and they are not taken hold of by the wall of the house.
1 Kings 6:8
The opening of the middle side [is] at the right shoulder of the house, and with windings they go up on the middle one, and from the middle one unto the third.