John Mark
Mark 2:21ESV·traditional attribution

No one sews a piece of unshrunk cloth on an old garment. If he does, the patch tears away from it, the new from the old, and a worse tear is made.

Matthew Henry Presbyterian @wholebiblehenry

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

John Gill Reformed Baptist @doctorgill

And no man putteth new wine into old bottles,.... By "old bottles" are meant, the Scribes and Pharisees, the whole, which needed not a physician, and the righteous, Christ came not to call; and by new wine, either the love of God, which is not shed abroad in the hearts of such persons; or the blessings of the new covenant, which are not bestowed upon...

Albert Barnes Presbyterian @notesbybarnes

Verse 21. (1) "of new cloth" or, "raw", or "unwrought"