2 Chronicles 23:18-19

18And Jehoiada appointed the officers of the house of Jehovah under the hand of the priests the Levites, whom David had distributed in the house of Jehovah, to offer the burnt-offerings of Jehovah, as it is written in the law of Moses, with rejoicing and with singing, according to the order of David. 19And he set the porters at the gates of the house of Jehovah, that none that was unclean in anything should enter in.