Matthew Poole and continuators on Ezekiel 40:5

5 And behold, a wall on the outside of the house round about: and in the mans hand a measuring reed of six cubits long , by the cubit, and an hand breadth : so he measured the breadth of the building, one reed; and the height , one reed.

This was that outmost Wall, which did encompasse the whole ground, on which the Temple stood, and the Courts, that belonged to the Temple; a wall that encompassed the whole mount Sion, upon whose top the Temple stood.

This passage clears, which wall it was, viz. the outermost of three, which the floor of the Temple, and the mount was encircled with.

House of God, the Temple, as ch. 10.4. and a Chr. 2.1, 5.

The Prophet is called to see and hear, but the standard is not put into his hand; Christ, who is this man, hath and keeps the Reed in his own hand, as the onely fit person to take the measures of all.

Or Cane, for this measuring Rod or Staffe was of those Canes growing in that Countrey, strait, long, and light, and which Architects did make use of.

Each cubit consisting of 18 inches in our common account, and though there is much wrangling about the exact dimensions of this cubit, I will not intermeddle with the dispute, it was about one Roman foot, and half, which comes very near to our English foot and half, or Eighteen inches, or one half yard.

Added to each six Cubits, not as some have supposed to each cubit.

The thickness of the walls which were one Reed, and one hands breadth, or three yards, and there inches thick.

And the height equal, taking the measure, not from the bottom of the wall in the Valley on the outside, which was of different heighth, as the Valley was of different depth, but taking the measure from the Area, or floor on the inside of the wall, it was in the whole circuit of equal height, as here.