Matthew Poole and continuators on Ezekiel 40:14

14 He made also posts, of threescore cubits , even unto the post of the court round about the gate.

Measured and thereby shewed what kind of posts they should be.

If this might be interpreted by Cyrus Edict for building this fabrick 60 cubits high, it would be a clear confirmation of the divine mission of the Prophet, and the certainty of a future performance of the good he promised in Gods name, when it appears so evident, that he had so long before declared to what height the building should be raised by license from Cyrus. But more like 'tis, that it refers to the heighth of this gate built up two Stories above the Arch, and the Posts in their heigth are only mentioned, but imply all the rest of the building, over the East gate.

These high columns, or posts on the inner front of this gate were so disposed, that the last on each side was very near to the first Post, or Pillar of the Court on either side of the gate, and so the Posts, and buildings laid on those posts joyned on each side of this gate.