Second Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
Chapter 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.