Cyril of Alexandria

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. …

Catena Aurea by Aquinas ↗

Augustine of Hippo

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?

Catena Aurea by Aquinas ↗

Ambrose of Milan

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.

Catena Aurea by Aquinas ↗

Bede

But they said to him, "Why do the disciples of John fast often, and make supplications, likewise also the Pharisees; but yours eat and drink?" Matthew reports that the disciples of John themselves said this to the Savior, whence it is clear that both groups combined to question him with this. …

On the Gospel of Luke ↗