Ma Nishtana Ha-laila ha ze? What changed this night? Why is this night different from other nights?
It’s a sequel of four questions that are being asked in a song by youngest child sitting at the table. Yet, even adults are repeating this song. So what is really different on Pesach (Passover) night from all others?
Let’s try to take a look from a Kabbalistic view.
The first world that was created is called Adam HaKadmon. This world has the following five partzufim (faces/levels): Gulgalta, A”B, SA”G, M”A, BO”N. Once the Light fills (mitpashet) in a parzuf, ohr makif (surrounding light) is pushing masach (filter) to accept even more Light that it already has, as this is the Desire of Creator. Masach wants to accept more light but during this “consideration process” discovers that it can’t accept more with the intention to bestow, moreover because of these “thoughts” it can’t even hold the light it already has and thus decides to accept even less.
This process is called “zichuch” – thus the masach goes from higher sefira to lower. I.e first it allows Ohr Yechida to shine in the partzuf but after seeing that it can’t contain it, it moves one level down and so forth until all Light leaves the partzuf and new partzuf is created. This is the process in the first world – Adam HaKadmon, first tzimzum.
On the contrast in worlds of Atzilut, Beriya, Yetzira and Asia the process is opposite. There are three lines and there are states of Katnut (small) and Gadlut (big). In these worlds the process is opposite – unlike with Adam HaKadmon where we go from Higher Sefira to Lower, in worlds of ABYA we go from Small to Big.
And this is the hint in the Pesach song – What has changed tonight? Specifically tonight, not on any other holiday and Shabbos but tonight! Why are we going from Big to Small (we first make blessing on the wine, then eat bread and then eat leafs) just like in the world of Adam Kadmon vs. the other nights where we go from Small to Big just like in the worlds of ABYA.
Even the name of the holiday signifies this change – Passover – to SKIP. Unlike with other holidays when we attract Divine Lights starting from Lower Worlds and going to Higher ones, in Pesach we directly connected to the highest of all – to Adam Kadmon.
Full text and music are here: http://www.chabad.org/multimedia/media_cdo/aid/662797/jewish/Ma-Nishtana.htm