Charles Ellicott Commentary Ezekiel 41:6

"And the side-chambers were in three stories, one over another, and thirty in order; and they entered into the wall which belonged to the house for the side-chambers round about, that they might have hold [therein], and not have hold in the wall of the house." — Ezekiel 41:6 (ASV)

Three, one over another, and thirty in order. —Literally, three (and that) thirty times — that is, there were three stories of chambers one above the other, and this was repeated thirty times, giving thirty chambers in each story, or ninety in all. These chambers were exactly like those surrounding Solomon’s Temple, except that they were one cubit narrower, and their description is made clearer by a comparison with 1 Kings 6:5–10. The Greek version says that there was a space between these chambers and the wall of the house, and several interpreters have followed this explanation; however, this interpretation is quite inconsistent with the language of the original. Furthermore, it would involve an inner wall for the chambers, of which there is no mention, and for which no space is allowed.

Entered into the wall ... but they had not hold. —More exactly, they came upon the wall. The "house" cannot, without violence, be understood as anything but the Temple itself. The construction was the same as in Solomon’s Temple (1 Kings 6:6), the wall receding with each story of the chambers, thus leaving a ledge on which the beams should rest, that the beams should not be fastened in the walls of the house.

Nothing is said about the distribution of these chambers, but, as will be seen from the plan, a uniform size requires that they should be placed twelve on each side, and six at the end of the Temple.