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.”
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).