Luke 16:18

Whosoever putteth away his wife,.... For any other cause than for adultery, as the Jews used to do upon every trifling occasion, and for every little disgust: by which instance our Lord shows, how the Jews abused and depraved the law, and as much as in them lay, caused it to fail; and how he, on the other hand, was so far from destroying and making it of none effect, that he maintained the purity and spirituality of it; putting them in mind of what he had formerly said, and of many other things of the like kind along with it; how that if a man divorces his wife, for any thing else but the defiling his bed,and marrieth another, committeth adultery: with her that he marries: because his marriage with the former still continues, and cannot be made void by, such a divorce:and whosoever marrieth her that is put away from her husband; the phrase "from her husband", is omitted in the Syriac and Persic versions:committeth adultery; with her that he marries, because notwithstanding her husband's divorce of her, and his after marriage with her, she still remains his lawful and proper wife;See Gill on "Mt 5:32".