Question: How do the Reshimot (spiritual information data) get realized?
Answer: All Reshimot are sorted by the Upper Light (the Light of AB-SAG). Imagine what kind of work it is to sort out all the Reshimot that remained after the collective Malchut broke while wishing to perform full correction (Gmar Tikkun).
Malchut of Infinity performed a “Zivug” (adhesion, merger) with the Light of the End of Correction in its full volume created by the Creator, in its entire phase Dalet (4/4). And all of it broke into the tiniest fragments. There is no property, Sefira or its sub-Sefira, that would remain linked with the other. They hate each other.
What an infinite multitude of various properties are now in the Rosh de SAG from the multiplication of these Lights that rose to it after the breaking! It is impossible to count and imagine it. The Light of the End of Correction is against the Kli (the will to receive, desire) at the End of Correction, and instead of unification, there is hatred between them. And this entire Kli is completely broken, fallen apart into fragments.
And now, Rosh de SAG has to sort the Kli broken in all its individual Sefirot: what to collect from it in order to make the first Partzuf, at least somewhat corrected, under the Second Restriction and various limitations. What an enormous and complex job it is!
On the other hand, when the Upper Light comes in, it illuminates this entire multitude of breakings, the Reshimot, and they immediately line up in its light with each of them taking its correct place. The Light organizes them, illuminating who gives more and who gives less; and in this light, they all get aligned in a straight line at once.
Then, from the countless multitude of these forms, SAG selects the correct forms and puts them in order. But how does it pick them out? This work, still done by the Upper Light that illuminates Reshimot from Above, most wondrously discerns what is right and what is not, according to what property, in which direction, and in what way to align them along the three lines, from Above downward, with the screens so that all of them are mutually connected.
The Light collects the broken parts into the first drop of semen, which is the beginning of an embryo. It contains everything but the work that must be added. Yet all sorting is done by the Light. And then, the lower one is able to work. As to the discernment, the lower one can never accomplish that.
Therefore, if we wish to discern something, sort it out, and unite with each other in our world, we will never be able to do so. Nothing and never! We need the Upper Light to connect all separated parts since we, too, remain in the broken world. Meanwhile, we wish to organize, restore, and revive it ourselves… What a foolish endeavor!
From the 2nd part of the Daily Kabbalah Lesson 12/19/10, Talmud Eser Sefirot