First Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
28:21Behold the courses of the priests and the Levites, for every ministry of the house of the Lord, stand by thee, and are ready, and both the princes, and the people know how to execute all thy commandments.
Original from Project Gutenberg - Massive cleanup of OCR problems and editing done locally.