Second Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
23:6And let no one come into the house of the Lord, but the priests, and they that minister of the Levites: let them only come in, because they are sanctified: and let all the rest of the people keep the watches of the Lord.
Original from Project Gutenberg - Massive cleanup of OCR problems and editing done locally.