What God therefore hath joined. By this sentence Christ restrains the caprice of husbands, that they may not, by divorcing their wives, burst asunder the sacred knot. And as he declares that it is not in the power of the husband to dissolve the marriage, so likewise he forbids all others to confirm by their authority unlawful divorces; for the magistrate abuses his power when he grants permission to the husband to divorce his wife. But the object which Christ had directly in view was, that every man should sacredly observe the promise which he has given, and that those who are tempted, by wantonness or wicked dispositions, to divorce, may reflect thus with themselves: "Who, art thou that allowest thyself to burst asunder what God hath joined?" But this doctrine may be still farther extended. The Papists, contriving for us a church separated from Christ the Head, leave us an imperfect and mutilated body. In the Holy Supper, Christ joined the bread and the wine; but they have dared to withhold from all the people the use of the cup. To these diabolical corruptions we shall be at liberty to oppose these words, What God hath joined let not man separate

What therefore God hath joined together - Συνεζευξεν, yoked together, as oxen in the plough, where each must pull equally, in order to bring it on. Among the ancients, when persons were newly married, they put a yoke upon their necks, or chains upon their arms, to show that they were to be one, closely united, and pulling equally together in all the concerns of life. See Kypke in loco.
The finest allegorical representation of the marriage union I have met with, is that antique gem representing the marriage of Cupid and Psyche, in the collection of the duke of Marlborough: it may be seen also among Baron Stoch's gems, and casts or copies of it in various other collections.
1. Both are represented as winged, to show the alacrity with which the husband and wife should help, comfort and support each ether; preventing, as much as possible, the expressing of a wish or want on either side, by fulfilling it before it can be expressed.
2. Both are veiled, to show that modesty is an inseparable attendant on pure matrimonial connections.
3. Hymen or Marriage goes before them with a lighted torch, leading them by a chain, of which each has a hold, to show that they are united together, and are bound to each other, and that they are led to this by the pure flame of love, which at the same instant both enlightens and warms them.
4. This chain is not iron nor brass, (to intimate that the marriage union is a state of thraldom or slavery), but it is a chain of pearls, to show that the union is precious, beautiful, and delightful.
5. They hold a dove, the emblem of conjugal fidelity, which they appear to embrace affectionately, to show that they are faithful to each other, not merely through duty, but by affection, and that this fidelity contributes to the happiness of their lives.
6. A winged Cupid, or Love, is represented as having gone before them, preparing the nuptial feast; to intimate that active affections, warm and cordial love, are to be to them a continual source of comfort and enjoyment; and that this is the entertainment they are to meet with at every step of their affectionate lives.
7. Another Cupid, or genius of love comes behind, and places on their heads a basket of ripe fruits; to intimate that a matrimonial union of this kind will generally be blessed with children, who shall be as pleasing to all their senses as ripe and delicious fruits to the smell and taste.
8. The genius of love that follows them has his wings shrivelled up, or the feathers all curled, so as to render them utterly unfit for flight; to intimate that love is to abide with them, that there is to be no separation in affection, but that they are to continue to love one another with pure hearts fervently. Thus love begins and continues this sacred union; as to end, there can be none, for God hath yoked them together.
A finer or more expressive set of emblems has never, I believe, been produced, even by modern refined taste and ingenuity. This group of emblematical figures is engraved upon an onyx by Tryphon, an ancient Grecian artist. A fine drawing was made of this by Cypriani, and was engraved both by Bartolozzi and Sherwin. See one of these plates in the second volume of Bryant's Analysis of Ancient Mythology, page 392.

Wherefore they are no more twain, but one flesh. What therefore God hath (e) joined together, let not man put asunder.
(e) Has made them yokefellows, as the marriage itself is called a yoke, by a borrowed kind of speech.

Wherefore they are no more twain,.... They were two before marriage, but now no more so; not but that they remain two distinct persons,
but one flesh; or, as the Syriac, Arabic, Persic, and Ethiopic versions read, "one body": hence the wife is to beloved by the husband as his own body, as himself, as his own flesh, Ephesians 5:28.
what therefore God hath joined together; or, by the first institution of marriage, has declared to be so closely united together, as to be, as it were, one flesh, and one body, as husband and wife are;
let no man put asunder; break the bond of union, dissolve the relation, and separate them from each other, for every trivial thing, upon any slight occasion, or for anything; but what is hereafter mentioned. The sense is, that the bond of marriage being made by God himself, is so sacred and inviolable, as that it ought not to be dissolved by any man; not by the husband himself, or any other for him; nor by any state or government, by any prince or potentate, by any legislator whatever; no, not by Moses himself, who is, at least, included, if not chiefly designed here, though not named, to avoid offence: and God and man being opposed in this passage, shows, that marriage is an institution and appointment of God, and therefore not to be changed and altered by man at his pleasure; this not merely a civil, but a sacred affair, in which God is concerned.

What God hath joined together. If God hath so joined them that the twain are one, no human ordinance has the right to separate them.