Notes on The Holy Gospel of Jesus Christ, According to St. Matthew (Author Bishop Richard Challoner (ed.))
19:9 Except it be, etc: In the case of fornication, that is, of adultery, the wife may be put away: but even then the husband cannot marry another as long as the wife is living.
Original Douay-Rheims from Project Gutenberg - Massive cleanup of OCR problems and editing done locally.