Treasury of Scripture Knowledge
1 Chronicles 23:28
For from their station at the hand of the sons of Aaron for the service of the house of Jehovah, upon the enclosures and upon the cells and for the cleansing to all the holy place and the works of the service of the house of God.
2 Chronicles 23:6
And they shall not come into the house of Jehovah except the priests and those serving to the Levites; they shall come in for they are holy: and all the people shall watch the watches of Jehovah.