1 Chronicles (Author Compiled by Isaiah and Ezra from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
12:29And of the children of Benjamin, the kindred of Saul, three thousand: for hitherto the greatest part of them had kept the ward of the house of Saul.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.