1 Chronicles 23:28

28For their duty was to assist the sons of Aaron for the service of the house of the Lord, having the care of the courts and the chambers, the cleansing of all that is holy, and any work for the service of the house of God.

2 Chronicles 23:6

6Let no one enter the house of the Lord except the priests aand ministering Levites. They may enter, for they are holy, but all the people shall keep the charge of the Lord.
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