2 Chronicles 23:4, 5
2 Chronicles 23:4 NIV
Now this is what you are to do: A third of you priests and Levites who are going on duty on the Sabbath are to keep watch at the doors
2 Chronicles 23:5 NIV
a third of you at the royal palace and a third at the Foundation Gate, and all the others are to be in the courtyards of the temple of the LORD.