Augustine of Hippo
Catena Aurea · Matthäusevangelium 5
It hath been said, Whosoever shall put away his wife, let him give her a writing of divorcement: 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.
(Serm. in Mont. i. 14.) By interposing this delay in the mode of putting away, the lawgiver shewed as clearly as it could be shewn to hard hearts, that he hated strife and disagreement. The Lord then so confirms this backwardness in the Law, as to except only one case, the cause of fornication; every other inconvenience which may have place, He bids us bear with patience in consideration of the plighted troth of wedlock.