Second Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
20:24porro Iudas cum venisset ad speculam quae respicit solitudinem vidit procul omnem late regionem plenam cadaveribus nec superesse quemquam qui necem potuisset evadere
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.