“But the days will come, when the bridegroom shall be taken away from them, and then shall they fast in those days.”
Luke 5:35 — Greek Interlinear
Church Fathers on Luke 5:35
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 you eat, &c. As if they said, You 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 you not…
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 to him the disciple 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 if He should say, The present time is one of joy and gladness, sorrow must not then be mixed up with it.