2 Chronicles 23:18-19

Worship in the Lord's temple

18 Then Jehoiada gave authority over the house of the Lord to the priests. They were Levites and David had given to them different jobs at the Lord's house. They gave sacrifices by fire to the Lord as Moses had written in the Law. They were happy and they sang at the same time. David had told them how to do that. 19 Jehoiada also put men at the gates of the Lord's house. So, anyone who was not clean for any reason could not go in.