2 Chronicles 23:4-6

New Century Version

⁴ Now this is what you must do: You priests and Levites go on duty on the Sabbath. A third of you will guard the doors. ⁵ A third of you will be at the king’s palace, and a third of you will be at the Foundation Gate. All the other people will stay in the courtyards of the Temple of the Lord. ⁶ Don’t let anyone come into the Temple of the Lord except the priests and Levites who serve. They may come because they have been made ready to serve the Lord, but all the others must do the job the Lord has given them.