Nehemiah 7:1

Now it came to pass, when the wall was built, and I had set
up the doors
Which was not done when Sanballat sent his first letter, but now was, ( Nehemiah 6:1 ) ,

and the porters and the singers, and the Levites were appointed;
not to attend the doors of the gates of the wall, but to return to their service in the temple, who had been employed in one thing or another, while the wall and gates were building and repairing; see ( Nehemiah 3:17 ) .