1 Chronicles (Author Compiled by Isaiah and Ezra from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
14:15and it cometh to pass, when thou hearest the sound of the stepping at the heads of the mulberries, then thou goest out into battle, for God hath gone out before thee to smite the camp of the Philistines.'
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.