No one sews a piece of unshrunk cloth on an old garment; or else the new piece pulls away from the old, and the tear is made worse. And no one puts new wine into old wineskins; or else the new wine bursts the wineskins, the wine is spilled, and the wineskins are ruined. But new wine must be put into new wineskins.
When we move into a new season, we should leave behind what belongs to the previous season. Otherwise, we would lose both new wine and old wineskins. We should not try to stick to old wineskins, when God is giving us new wine.