So the wall was finished on the twenty-fifth day of the month Elul, in fifty-two days.
Nehemiah is here finishing the wall of Jerusalem, and yet still has trouble created him by his enemies. I. Tobiah, and the other adversaries of the Jews, had the mortification to see the wall built up, notwithstanding all their attempts to hinder it. The wall was begun and finished in fifty-two days, and yet we have reason to believe they rested on the sabbaths, Neh 6:15.
Commenting on Nehemiah 6:15-19
So the wall was finished in the twenty fifth day of the month Elul,.... The sixth month, answering to part of August and part of September: in fifty and two days; which Aben Ezra reckons from the time that Sanballat sent his letter to Nehemiah, when no more were wanting than to set the doors upon the gates, Neh 6:1, but rather these, with Jarchi...
So the wall was finished in the twenty and fifth [day] of [the month] Elul, in fifty and two days. (h) Which was the sixth month and contained part of August, and part of September. (i) After I had sent Sanballat his answer.