Theophylact of Ohrid
Catena Aurea · Lukasevangelium 16
And the Pharisees also, who were covetous, heard all these things: and they derided him. And he said unto them, Ye are they which justify yourselves before men; but God knoweth your hearts: for that which is highly esteemed among men is abomination in the sight of God. The Law and the Prophets were until John: since that time the kingdom of God is preached, and every man presseth into it. And it is easier for heaven and earth to pass, than one tittle of the law to fail. Whosoever putteth away his wife, and marrieth another, committeth adultery: and whosoever marrieth her that is put away from her husband committeth adultery.
For that to the imperfect the Law spoke imperfectly is plain from what he says to the hard hearts of the Jews, “If a man hate his wife, let him put her away,” (Deut. 24:1.) because since they were murderers and rejoiced in blood, they had no pity even upon those who were united to them, so that they slew their sons and daughters for devils. But now there is need of a more perfect doctrine. Wherefore I say, that if a man puts away his wife, having no excuse of fornication, he commits adultery, and he who marrieth another commits adultery.