Fourth Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
6:15consurgens autem diluculo minister viri Dei egressus est viditque exercitum in circuitu civitatis et equos et currus nuntiavitque ei dicens eheu eheu domine mi quid faciemus
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.