Matthew 9:14-17

Then the disciples of John [the Baptist] came to Jesus, asking, “Why do we and the Pharisees often fast [as a religious exercise], but Your disciples do not fast?” And Jesus replied to them, “Can the guests of the bridegroom mourn while the bridegroom is with them? The days will come when the bridegroom is taken away from them, and then they will fast. But no one puts a piece of unshrunk (new) cloth on an old garment; for the patch pulls away from the garment, and a worse tear results. Nor is new wine put into old wineskins [that have lost their elasticity]; otherwise the wineskins burst, and the [fermenting] wine spills and the wineskins are ruined. But new wine is put into fresh wineskins, so both are preserved.”