“So the wall was finished on the twenty-fifth day of the month Elul, in fifty-two days. When all our enemies heard of it, all the nations around us were afraid. They fell greatly in their own esteem. They perceived that this work had been accomplished with the help of our God.”
Elul was the 6th month. It took them about 52 days, less than 2 months, to finish this great work of rebuilding the wall. All the other nations were now afraid. This work could only have been done with the help of God, as Nehemiah is always respectful.