Jerome, on Matt 19:9

“And I say to you, that whosoever shall put away his wife, except it be for fornication, and shall marry another, committeth adultery: and he that shall marry her that is put away, committeth adultery.”

“For it might be that a man might falsely charge an innocent wife, and for the sake of another woman might fasten an accusation upon her. Therefore it is commanded so to put away the first, that a second be not married while the first is yet alive. Also because it might happen that by the same law a wife would divorce her husband, it is also provided that she take not another husband; and because one who had become an adulteress would have no further fear of disgrace, it is commanded that she many not another husband. But if she do marry another, she is in the guilt of adultery; wherefore it follows, And whoso marrieth her that is put away, committeth adultery.”

Imported from an open dataset — not yet checked against the printed edition.