Luke 5:33

Or, That fast is not given up whereby the flesh is mortified, and the desires of the body chastened. (For this fast commends us to God.) But we cannot fast who have Christ, and banquet on the flesh and blood of Christ.

At the same time also is shown the difference between those who are zealous for the law and those who are for grace, that they who follow the law shall suffer eternal hunger of soul, while they who have received the word into the inmost soul, refreshed with abundance of heavenly meat and drink, can neither hunger nor thirst. And so they who fasted in soul murmured.

(de Con. Ev. l. ii. c. 27.) Now Luke evidently relates that this was spoken not by men of themselves, but by others concerning them. How then does Matthew say, Then came unto him the disciples of John, saying, Why do we and the Pharisees fast; unless that they themselves also came, and were all eager, as far as they were able, to put the question to Him?

As soon as they have received the first answer from Christ, they proceed from one thing to another, with the intent to show 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 of virtue, 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. For the showing forth of our Saviour in this world was nothing else but a great festival, (πανήγυρις) spiritually uniting our nature to Him as His bride, that she who was formerly barren might become fruitful. The children of the Bridegroom then are found to be those who have been called by Him through a new and evangelical discipline, but not the Scribes and Pharisees, who observe only the shadow of the law.