Matthew Poole and continuators on Matthew 19:9

9 And I say unto you, Whosoever shall put away his wife, except it be for fornication, and shall marry another, committeth adultery: and who so marrieth her that is put away, doth commit adultery.

We met with the like Determination of our Lords upon this Question, Ch. 5.32. only there it was [instead of committeth Adultery] causeth her to commit Adultery, that is in Case she Married again: Here our Lord saith, the like of the Husband, we have the same, Mar. 10, 11. Luk. 16.18. The reason is this, because nothing but Adultery dissolveth the Knot, and band of Marriage. Tho they be thus illegally separated, yet according to the Law of God, they are still Man and Wife: Some have upon these Words made a Question, whether it be Lawful for the Husband, or the Wife separated for Adultery, to Marry again while each other Liveth: As to the party offending, it may be a Question, but as to the innocent Person offended, it is no Question, for the Adultery of the Person offending, hath dissolved the Knot of Marriage by the Divine Law. It is true, that the Knot cannot be dissolved, without the Freedom of both Persons, each from another, but yet it seemeth against Reason, that both Persons should have the like Liberty to a second Marriage. For, 1. The Adulteress, is by Gods Law a dead Woman, and so in no Capacity to a second Marriage. 2. It is unreasonable that she should make an Advantage of her own sin, and Error. 3. This might be the occasion of Adultery, to give a wicked Person a legal Liberty to satisfie an Extravagant Lust. But for the innocent Person, it is as unreasonable, that he or she should be punished for the sin of another. But what our Saviour saith here, and in the other parallel Texts, is undoubtedly to be understood, of Husbands, and Wives, put away not for Adultery, but for other light and trivial Causes, for which by the Law of God no Divorce is allowed.

Marginal references: 1 Cor. 7.10.11.