Matthew 9:16

By these examples He shows that neither our souls nor bodies, being so weakened by inveteracy of sin, are capable of the sacraments of the new grace.

Then what He had done before, this He doth here again. I mean, that as He, when they were attempting to prove Him blameable for eating with sinners, proved to them on the contrary, that His proceeding was not only no blame, but an absolute praise to Him: so here too, when they wanted to show of Him, that He knows not how to manage His disciples, He signifies that such language was the part of men not knowing how to manage their inferences, but finding fault at random. "For no man," saith He, "putteth a piece of new cloth unto an old garment." He is again establishing His argument by illustrations from common life. And what He saith is like this, "The disciples have not yet become strong, but still need much condescension. They have not yet been renewed by the Spirit, and on persons in that state one ought not to lay any burden of injunctions." And these things He said, setting laws and rules for His own disciples, that when they should have to receive as disciples those of all sorts that should come from the whole world, they might deal with them very gently.

Otherwise; By the old garment, and old skins, we must understand the Scribes and Pharisees; and by the piece of new cloth, and new wine, the Gospel precepts, which the Jews were not able to bear; so the rent was made worse. Something such the Galatians sought to do, to mix the precepts of the Law with the Gospel, and to put new wine into old skins. The word of the Gospel is therefore to be poured into the Apostles, rather than into the Scribes and Pharisees, who, corrupted by the traditions of the elders, were unable to preserve the purity of Christ's precepts.

By the old garment He means His disciples, who had not yet been renewed in all things. The patch of undressed, that is, of new cloth, means the new grace, that is, the Gospel doctrine, of which fasting is a portion; and it was not meet that the stricter ordinances of fasting should be entrusted to them, lest they should be broken down by their severity, and forfeit that faith which they had; as He adds, It taketh its wholeness from the garment, and the rent is made worse.

The different comparisons all refer to the same thing, and yet are they different; the garment by which we are covered abroad signifies our good works, which we perform when we are abroad; the wine with which we are refreshed within is the fervor of faith and charity, which creates us anew within.