2 Chronicles (Author Compiled by Isaiah and Ezra from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
23:5and a third part shall be at the king's house; and a third part at the gate of the foundation; and all the people shall be in the courts of the house of Jehovah.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.