"New Wine" is the "New Covenant."
Matthew 9:17
Neither do people pour new wine into old wineskins. If they do, the skins will burst; the wine will run out and the wineskins will be ruined. No, they pour new wine into new wineskins, and both are preserved.”
Mark 2:22
And no one pours new wine into old wineskins. Otherwise, the wine will burst the skins, and both the wine and the wineskins will be ruined. No, they pour new wine into new wineskins.”
Luke 5:37
And no one pours new wine into old wineskins. Otherwise, the new wine will burst the skins; the wine will run out and the wineskins will be ruined.
Luke 5:36-39
36 He told them this parable: “No one tears a piece out of a new garment to patch an old one. Otherwise, they will have torn the new garment, and the patch from the new will not match the old. 37 And no one pours new wine into old wineskins. Otherwise, the new wine will burst the skins; the wine will run out and the wineskins will be ruined. 38 No, new wine must be poured into new wineskins.
See here why you should listen to me.
(39 And no one after drinking old wine wants the new, for they say, ‘The old is better.’”)
Born Again
The "New Wineskin" is the "New Man," and the "New Wine" is the "New Covenant."
Ephesians 2:15
Having abolished in his flesh the hostility, of even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace;
Luke 22:20
In the same way, after the supper he took the cup, saying, “This cup is the new covenant in my blood, which is poured out for you.
1 Corinthians 11:25
In the same way, after supper he took the cup, saying, “This cup is the new covenant in my blood; do this, whenever you drink it, in remembrance of me.”