Mark 2:21

21 "No one sews a piece of unshrunk cloth on an old cloak; otherwise, the patch pulls away from it, the new from the old, and a worse tear is made.

Mark 2:21 Meaning and Commentary

Mark 2:21

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.

On an old garment;
the moral and ceremonial righteousness of the Jews, in obedience to the law of God; signifying, that the former were not to be joined with these, to make up a justifying righteousness before God; which were not sufficient for such a purpose, either singly, or both together:

else the new piece that filled it up, taketh away from the old, and
the rent is made worse;
for by attendance to the traditions of the elders, the Jews were taken off from, and neglected the commandments of God; nay, oftentimes the commands of God were made void by these traditions, so that the old garment of their own righteousness, which was very ragged and imperfect of itself, instead of being purer and more perfect, became much the worse, even for the purpose for which it was intended; (See Gill on Matthew 9:16).

Mark 2:21 In-Context

19 Jesus said to them, "The wedding guests cannot fast while the bridegroom is with them, can they? As long as they have the bridegroom with them, they cannot fast.
20 The days will come when the bridegroom is taken away from them, and then they will fast on that day.
21 "No one sews a piece of unshrunk cloth on an old cloak; otherwise, the patch pulls away from it, the new from the old, and a worse tear is made.
22 And no one puts new wine into old wineskins; otherwise, the wine will burst the skins, and the wine is lost, and so are the skins; but one puts new wine into fresh wineskins."
23 One sabbath he was going through the grainfields; and as they made their way his disciples began to pluck heads of grain.