Fourth Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
19:35factum est igitur in nocte illa venit angelus Domini et percussit castra Assyriorum centum octoginta quinque milia cumque diluculo surrexisset vidit omnia corpora mortuorum et recedens abiit
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.