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.”
(Mark 2:22)
Someone ran, filled a sponge with wine vinegar, put it on a staff, and offered it to Jesus to drink. “Now leave him alone. Let’s see if Elijah comes to take him down,” he said.
(Mark 15:36)
I think that prof Markus Vinzent (and not only him) is correct to see the Parable of Wineskins as essentially a marcionite signature.
What I derive from this fact is that proto-Mark, being a separationist gospel (written by Cerinthus), is a reaction against Cdn/Mcn insofar the man on the cross is not a mere appearance who disappeared from the cross, but he is a real pious Jew (who adores YHWH the evil demiurge) used by the alien Christ to his goals (to destroy the demiurge).
The giving of wine vinegar to the mere man Jesus allegorizes the putting of new wine in old wineskins. He dies just as direct consequence of that act. Just the wine vinegar "kills" him, rather than delay his pain/death (as it was in the intentions of the giver).
And the man Jesus is killed rapidly by the wine just because he is a mere "old" (=Jewish) recipient of the "new" spiritual Christ of the alien God, enemy of YHWH.