The reason that the uncontained supernal light became surrounding light is that there is no change or loss in the spiritual realm.47Since nothing can be lost or destroyed in the spiritual realm, the supernal light cannot simply be stopped or extinguished from achieving its designated purpose of entering the fourth level. Therefore, it remains outside the fourth level as surrounding light, until the fourth level is finished being rectified to fully receive it.
The process of rectification refers to the incremental way that the fourth level “evolves” to be able to ultimately receive the supernal light in its entirety. This process is discussed extensively in later sections below. Since the light of Ein Sof was drawn to Adam Kadmon to be enclothed in the fourth level, it must achieve this, and therefore, although the partition has now prevented it from entering the fourth level and rebuffed it, nevertheless this does not nullify the process of the drawing forth of the supernal light of Ein Sof, God forbid.
On the contrary, it sustains it, only in a different manner. That is, it is achieved by the multiple fusions in the five worlds of Adam Kadmon, Atzilut, Beria, Yetzira, and Asiya, until the rectification is completed so that the fourth level is rectified through all these fusions, in all its perfection, able to receive the supernal light, at which point the supernal light of Ein Sof will be enclothed in it as before.