1 Chronicles (Author Compiled by Isaiah and Ezra from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
9:13And their brethren, heads of the house of their fathers, a thousand and seven hundred and threescore; very able men for the work of the service of the house of God.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.