Each cup of wine represents one of these levels. I'm fascinated and would like to find out about this. Thanks for any help you can give me. Dear Deb Wiener, Here's a brief idea from the class. Matter is pure material that is not formed into a shape and has no purpose as yet.
Form is the goal, purpose and shape that is given to matter.
Water symbolizes matter, because it has no form and takes on the shape of whatever vessel it's placed in. The reason you can't give your dog chametz on Pesach is that you are not allowed to own chametz, or to derive benefit from it. I've asked Rabbis and looked at various Haggadahs and nobody seems to have the minhag to arrange them the way all the plates are made, not Sephardim, not Ashkanazim, not Litvaks and not Chassidim. Funny you should ask. Just the other day I went to a mikveh to immerse a new vessel, and I bumped into a friend who was immersing a Seder Plate he had just bought in Jerusalem's Meah Shearim neighborhood.