3 And I said to them, Do not let the doors of Jerusalem be open till the sun is high; and while the watchmen are in their places, let the doors be shut and locked: and let the people of Jerusalem be put on watch, every one in his watch, opposite 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.