I'm no longer even going to defend these chiasms; I'm just going to toss them out there.
The end of verse 43: "follow me" is the center of 35-51, but also of 34-51, which ties this section to all of the ones before it, in the following general manner:
where verse 34 is both A' and A.
Then, in chapter 2, I'm having difficulty pinning down an exact center, which gives me tons of stuff to work with.
One and two correspond exactly to eleven and twelve, which could simply indicate an inclusio. However, verse three's "wine" and verse ten's "wine" correspond too clearly to simply be accidental, especially with all the chiasms we've had so far. Then it starts to get interesting.
I would postulate that the mother speaking to Jesus about wine is equivalent to the master of the feast speaking to the bridegroom about wine. If you grant this, it's loads of fun. Then you have servants in five and servants in nine, the water of verses six and nine, and the actual ambiguity of the miracle being the center. If you really want, you can try to make 7a correspond to 8, but 7b and 8b correspond too well to make 7b the chiastic center. Both verses are the center, making this an
type of chiasm, with the actual center occurring offstage: the waterpots are filled with water, wine is drawn out. The miracle has to have occurred between these, but it's hidden from us, and it's the point of the entire thing. So ponder this: why is it hidden? Why doesn't John simply tell us what happened? What is the significance of this?
Isn't this fun?
However, this is just the structural skeleton: the muscular ramifications are where it gets really fun, and those I will largely leave to you. I am simply demonstrating the door; you get to walk through it, as there is an infinite amount of material in the room, and what would mean a great deal to you would mean nothing to me, and vice versa.
However, I will give you a few things to note: 1). Christ = bridegroom, and He Is one that never will run out of wine. 2). The water was what they washed in to become clean, and it became what filled them to make them clean (wine always equates to the Spirit) in a very simple Old/New, Type/Antitype, Shadow/Fulfillment relationship. And 3). It was good, good wine.