3 And I said to them that the gates of Jerusalem should not be opened until the sun was hot, and that they should shut the doors and bar them while they stood by; and that there should be appointed watches of the inhabitants of Jerusalem, every one in his watch, and every one over against his house.
Matthew Henry's Commentary on Nehemiah 7:3
Commentary on Nehemiah 7:1-4
(Read Nehemiah 7:1-4)
Nehemiah, having finished the wall, returned to the Persian court, and came to Jerusalem again with a new commission. The public safety depends on every one's care to guard himself and his family against sin.