What does Matthew 5:32 mean?

Matthew 5:32 KJV
But I say unto you, That whosoever shall put away his wife, saving for the cause of fornication, causeth her to commit adultery: and whosoever shall marry her that is divorced committeth adultery.

Matthew 5:32 NKJV
“But I say to you that whoever divorces his wife for any reason except sexual immorality causes her to commit adultery; and whoever marries a woman who is divorced commits adultery.

Matthew 5:32 MKJV
But I say to you that whoever shall put away his wife, except for the cause of fornication, causes her to commit adultery. And whoever shall marry her who is put away commits adultery.

Matthew 5:32 KJV 2000
But I say unto you, That whosoever shall put away his wife, except for the cause of fornication, causes her to commit adultery: and whosoever shall marry her that is divorced commits adultery.

Interlinear KJV

But /de/ I /ego/ say /lego/ unto you, /humin/ That /hoti/ whosoever /hos/ /an/ shall put away /apoluo/ his /autos/ wife, /gune/ saving /parektos/ for the cause /logos/ of fornication, /porneia/ causeth /poieo/ her /autos/ to commit adultery: /moichao/ and /kai/ whosoever /hos/ /ean/ shall marry /gameo/ her that is divorced /apoluo/ committeth adultery. /moichao/

Ripley 4 Gospels

Jesus corrected this erroneous view, and declared what is the just, and the only just, ground of divorce.

Causeth her to commit adultery; exposes her to this sin, proves an occasion to her of committing it.

Marry her that is divorced; that is, her that is divorced for light causes, for other causes than the one specified. The rule is similarly stated in Mt 19:9. In Mr 10:11-12 and Lu 16:18, the rule is stated without any exception. Thus Mark and Luke must be compared with Matthew in order to obtain the Saviour’s rule; and the exception in the former part of the verse in Matthew is to be regarded as implied in the latter part. Thus a wife divorced for any other cause than the one specified, is not, properly speaking, divorced. She is still, in the view of the Saviour, a married woman. The connection between her and her husband is not dissolved. Any other man, then, marrying her, commits adultery. An examination of Mt 19:3-9, and Mr 10:2-12, shows that this was, in our Saviour’s time, a subject that excited deep interest; and that there was great occasion for him, as the legislator for the conscience, to pronounce a decision.

Jamieson Fausset-Brown

32. But I say unto you, That whosoever shall put away his wife, saving for the cause of fornication, causeth her to commit adultery–that is, drives her into it in case she marries again.

and whosoever shall marry her that is divorced–for anything short of conjugal infidelity.

committeth adultery–for if the commandment is broken by the one party, it must be by the other also. But see on JFB for Mt 19:4. Whether the innocent party, after a just divorce, may lawfully marry again, is not treated of here. The Church of Rome says, No; but the Greek and Protestant Churches allow it.