This is supported by the point made earlier (Opening 5) that even in the case of the Sefirot, the ability to be seen is not intrinsic to their nature but was willfully instituted. Eyn Sof wanted the minimal power that constitutes the realm of limits and boundaries to be visible, while that which is beyond limits He did not want to be visible. Accordingly we apply the word Residue to the limited power subsumed within His limitless power. The Supreme Will wanted this limited power to be capable of being seen.