All the worlds are in the place of that space that has been restricted (Baal HaSulam, The Study of the Ten Sefirot, Part 1, “Restriction and Line,” Chapter 2).

The fact is that the light that comes from the Creator to the creation, that is, to the desire to enjoy, to receive, and to be filled, which was created by the Creator, saturates this desire.

The creation, filled with light and the feeling that shows how opposite it is to the Creator, restricts its desire to receive. This is why the separation between the Creator and the creation takes place.

Kabbalists write that the light that emanates from the Creator, i.e., the upper force, created a desire that was filled with light, then felt in itself how opposite it is to the quality of light and restricted itself to a point. This is the state of the first restriction.

Comment: This, in principle, is similar to the way our universe developed. Scientists say that it was compressed into one point and then an explosion happened.

My Response: ​​Yes. We are yet to see what degrees of development exist here.
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From KabTV’s “The Study of the Ten Sefirot (TES)” 10/2/22

Related Material:
Gradual Restriction Of Light
“And He Restricted That Light, And Drew Far Off”
Concealment of the Creator

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