Nehemiah 4:9
Nevertheless we made our prayer unto our God, and set a watch against them day and night, because of them.
Nehemiah 7:3
And I said unto them, Let not the gates of Jerusalem be opened until the sun be hot; and while they stand by, let them shut the doors, and bar them: and appoint watches of the inhabitants of Jerusalem, every one in his watch, and every one to be over against his house.