2 Chronicles (Author Compiled by Isaiah and Ezra from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
6:15who hast kept for Thy servant David my father that which Thou didst speak to him; yea, Thou dost speak with Thy mouth, and with Thy hand hast fulfilled it, as at this day.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.