John Gill Bible Commentary

So he measured the house, an hundred cubits long,.... The whole temple, the parts of which he had measured; and this is the sum total: and the separate place, and the building, with the walls thereof, an hundred cubits long; these are the several parts of the house or temple: the "separate place", the holy of holies, the building, the sanctuary or holy place; which, with the walls thereof, made a hundred cubits in length from east to west, thus; the thickness of the wall of the east porch, six cubits; the passage through the porch, eleven cubits; the wall between the porch and the temple, six cubits; the temple or holy place, forty cubits; the wall between that and the most holy place, two cubits; the holiest of all, twenty cubits; the thickness of the west wall, six cubits; the chambers at the end of it, four cubits; and the outer wall of them, five cubits; in all a hundred cubits: for this cannot be understood of the separate place, and the building before it, or rather behind it; since the separate place, or holiest of all, was twenty cubits, and the building ninety cubits; besides the thickness of each wall, five cubits a piece; in all a hundred and twenty.