In reality, all the worlds exist within one’s “neighbor.” The “neighbor” (or the group) is Malchut of Infinity. I exist outside of her.
At first, the earthly will to receive develops within me throughout multiple generations. Then, in our time (in the present reincarnation of the soul), a “point,” a spiritual desire, starts evolving within me. When I make attempts to become closer to the group, I begin to feel my nature as egoism and evil; that is, I become aware of my evil inclination.
When I study Kabbalah in the group, then to the extent that I realize my egoism as evil, I demand correction by the Light that Reforms that makes me similar to the Creator. All of this happens while I’m still not connected with the other (“neighbor”).
When I come to the decision that I am obliged to reach the connection with the other, it’s as if I come in contact with the group from the outside. Then I begin to connect with the group with the help of the Light that Reforms (Ohr Makif, the Surrounding Light), which shines upon me from inside, from the center of Malchut of Infinity.
All these stages of my connecting with the group and the measure of connection between us are the 125 spiritual degrees or the five worlds: Assiya (A), Yetzira (Y), Beria (B), Atzilut (A), and Adam Kadmon (AK). When my connection with the "other" is truly close and unbreakable by my being in the "center" of this "other" and completely merging with him, this state is called the “World of Infinity.”
From the 2nd part of the Daily Kabbalah Lesson 9/17/10, The Zohar
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