Cyril of Alexandria
Catena Aurea · Lukasevangelium 5
And they said unto him, Why do the disciples of John fast often, and make prayers, and likewise the disciples of the Pharisees; but thine eat and drink? And he said unto them, Can ye make the children of the bridechamber fast, while the bridegroom is with them? But the days will come, when the bridegroom shall be taken away from them, and then shall they fast in those days. And he spake also a parable unto them; No man putteth a piece of a new garment upon an old; if otherwise, then both the new maketh a rent, and the piece that was taken out of the new agreeth not with the old. And no man putteth new wine into old bottles; else the new wine will burst the bottles, and be spilled, and the bottles shall perish. But new wine must be put into new bottles; and both are preserved. No man also having drunk old wine straightway desireth new: for he saith, The old is better.
As soon as they have received the first answer from Christ, they proceed from one thing to another, with the intent to shew that the holy disciples, and Jesus Himself with them, cared very little for the law. Hence it follows, Why do the disciples of John fast, but thine eat, &c. (Lev. 15, prævaricationis.) As if they said, Ye eat with publicans and sinners, whereas the law forbids to have any fellowship with the unclean, but compassion comes in as an excuse for your transgression; why then do ye not fast, as they are wont to do who wish to live according to the law? But holy men indeed fast, that by the mortification of their body they may quell its passions. Christ needed not fasting for the perfecting ofvirtue, since as God He was free from every yoke of passion. Nor again did His companions need fasting, but being made partakers of His grace without fasting they were strengthened in all holy and godly living. For when Christ fasted for forty days, it was not to mortify His passions, but to manifest to carnal men the rule of abstinence.