Fourth Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
Chapter 19
35And it came to pass that night, that an angel of the Lord came, and slew in the camp of the Assyrians a hundred and eighty-five thousand. And when he arose early in the morning, he saw all the bodies of the dead.
Original from Project Gutenberg - Massive cleanup of OCR problems and editing done locally.