A number of things can be taken from this text.
However, in these testing times when events seem to suggest that authorities seem intent on dismantling marriage, In the Gospel of St John (2:1-11) Our Lord gives a clear endorsement of marriage as we should understand it!
Today at Matins in the Breviarium Romanum, St Augustine further clarifies the passage as in a homily he stated:
Quod Dominus invitatus venit ad nuptias, etiam excepta mystica significatione, confirmare voluit, quod ipse fecit nuptias. Futuri enim erant, de quibus dixit Apostolus, prohibentes nubere, et dicentes quod malum essent nuptiae, et quod diabolus eas fecisset: cum idem Dominus dicat in Evangelio interrogatus, utrum liceat homini dimittere uxorem suam ex qualibet causa, non licere, excepta causa fornicationis. In qua responsione, si meministis, hoc ait: Quod Deus coniunxit, homo non separet.
Even setting aside any mystical interpretation, the fact that the Lord was pleased to be asked, and to go to a marriage, showeth plainly enough that He is the Author and Blesser of marriage. ... Yet we read in the Gospel that when the Lord was asked, Is it lawful for a man to put away his wife for every cause? He answered that it was not lawful, except it were for fornication. In which answer ye will remember that He used these words: What God hath joined together, let not man put asunder.