First Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
14:15And when thou shalt hear the sound of one going in the tops of the pear trees, then shalt thou go out to battle. For God is gone out before thee to strike the army of the Philistines.
Original from Project Gutenberg - Massive cleanup of OCR problems and editing done locally.