Answer: The first substance appears from a point of Light or a thin ray of light that produces the desire that is opposite the Light under it. A ray of Light is not a ray of light in our world; rather, this is a desire to bestow that creates a desire to receive under it. A desire is a force.
Question: From where does the Creator have a desire?
Answer: We cannot say anything about the Creator Himself. We learn the wisdom of Kabbalah beginning from the moment we attain the Creator and His relationship toward us, meaning the beginning of the appearance of an intention to create a creature and bring it to a particular state. About what existed before then, we cannot say because He was not yet called a Creator.
Question: If so, the desire to create a creature is the Big Bang?
Answer: Yes, but this didn’t happen in the physical world as the physicists say.
Question: According to the wisdom of Kabbalah there are five worlds. Were they created after the creature?
Answer: These worlds were not created and don’t exist on their own. They exist only within a person. When we attain the upper world, we immediately discover it in a picture of five worlds. If we don’t perceive them, then these worlds don’t exist.
For example, the world of Atzilut is the world of the Creator, meaning His revelation, therefore it is called “Atzilut” from the word, “Etzlo” (with Him).
Question: Why is the Creator called first? Is it because He preceded the creature?
Answer: It is because His desire exists in the beginning of everything that happens and He manages every action.
From the Kabbalah Lesson in Russian 3/12/17