Answer: These are not religious customs. All the customs of the Israeli nation stem from the wisdom of Kabbalah, and are transcendental and illogical. All this doesn’t exist in nature and so we don’t need to follow them blindly.
The 18 minutes during which the Matzo are baked, for example, are made of the nine Sefirot of the Direct Light and nine Sefirot of the Returning Light. If we don’t manage to bake the Matzo during this time, a process of fermentation begins, which means that the egoistic desire will begin to swell and to rise. So we don’t eat leavened bread during Pesach since the fermented desire cannot receive the Light of Hochma (wisdom).
What does it mean to escape from Egypt? It’s a very quick transition when a person comes out of egoism and enters altruism, out of our world and into the feeling of the upper world, the feeling of the Creator.
Here, like in the time of birth, you cannot stall since you cease to be nourished by the previous system that provided you with oxygen and other nutrients. It operated upon you through the umbilical cord and your body functioned.
Now a totally different system operates upon you, as your lungs begin to receive oxygen through the air and you begin to breathe independently and to function; your temperature changes and totally new systems begin to operate, a different world and different senses. All this happens at once.
All the Jewish customs stem from the spiritual world and have no corporeal basis or justification. They gradually became customs of other religions as each religion received them in its own way and changed them to suit them.
For the Arabs, an offering is slaughtering a lamb. The word “sacrifice” stems from the Hebrew word “close.” The external customs of different peoples are not very different, but they all stem from ancient spiritual customs.
From the Daily Kabbalah Lesson 4/17/14, Questions and Answers with Dr. Laitman