The Book of Zohar, Chapter “Naso,” No. 93: When the Tree of Good and Evil rules, which is the purity of weekdays and the filth of weekdays, then these sages, who are compared to Sabbaths and holidays, have nothing more than the weekdays give them. As well as on Shabbat, there is no more than is corrected with its help on weekdays.
A man by himself, in his foundation, is just a point. He receives all his “body”/desire from the environment by means of the Light that Reforms. And this “body” is filled with the Light, the Creator that is revealed in it.
That is why Kabbalists write how, through desires/vessels/Kellim received from the environment, a person each time reveals the Creator. Everything what is written in The Zohar are the levels of revelation of the Creator in the desires that we get from the environment.
The Creator is revealed inside desires, within the environment, in the same place. The Zohar describes the degrees of this revelation both from the evil side and the good side, in opposite ways, because it is impossible to try something and feel its flavor if it is not salty, sweet, etc.
That is why The Zohar takes us through different experiences. But we know nothing, reveal nothing, except the Creator. The concept of the environment and specific details of perception disappear, and all this becomes more and more connected in “there is none else besides Him,” in one whole. In the end, we discover one desire/vessel, and inside it—the Creator. And nothing else.
That is why, if a person is yearning to the greatness of the Creator, to have only that in front of him, this directs him correctly.
From the 2nd part of the Daily Kabbalah Lesson 12/20/12, The Zohar