1 Chronicles (Author Compiled by Isaiah and Ezra from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
29:10And David blessed Jehovah in the sight of all the congregation; and David said, Blessed be thou, Jehovah, the God of our father Israel, for ever and ever.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.