2 Chronicles 23:4-6

New American Standard Bible

⁴ This is the thing which you shall do: a third of you, of the priests and Levites ^(A)who come in on the Sabbath, shall be gatekeepers, ⁵ and a third shall be at the king’s house, and a third at the Gate of the Foundation; and all the people shall be in the courtyards of the house of the Lord. ⁶ But no one is to enter the house of the Lord except the priests and ^(B)the ministering Levites; they may enter, for they are holy. And all the people are to keep the command of the Lord.