Ambrose of Milan
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 the Law delivered many things according to nature, as being more indulgent to our natural desires, that it might call us to the pursuit of righteousness. Christ breaks through nature as cutting off even our natural pleasures. But therefore we keep under nature, that it should not sink us down to earthly things, but raise us to heavenly.