The days will come when the bridegroom is taken away from them, and then they will fast in that day.
Christ had been put to justify himself in conversing with publicans and sinners: here he is put to justify his disciples; and in what they do according to his will he will justify them, and bear them out. I. He justifies them in their not fasting, which was turned to their reproach by the Pharisees. Why do the Pharisees and the disciples of John fast?
Commenting on Mark 2:18-28
No man also seweth a piece of new cloth, The traditions of the elders are meant, particularly concerning eating and drinking, and fasting, things before spoken of; and which occasioned this parable, and which were new things in comparison of the commands of God: some of them were of very short standing, devised in, that age; and most, if not all of them, were since the times of Ezra.
In those days - But instead of εν εκειναις ταις ἡμεραις, many of the best MSS. and versions read, εν εκεινῃ τῃ ἡμερᾳ, in that day; viz. the day in which Jesus Christ should be delivered up to the Jews and Gentiles. Mill and Bengel approve of this reading, and Griesbach adopts it. The former part of the verse seems to vindicate the common reading.