Albert Barnes Commentary Nehemiah 4:22

"Likewise at the same time said I unto the people, Let every one with his servant lodge within Jerusalem, that in the night they may be a guard to us, and may labor in the day." — Nehemiah 4:22 (ASV)

Let every one ... lodge within Jerusalem - that is, “Let none return to his own village or city at night, but let all take their rest in Jerusalem.”