The works of the Emanator, blessed be His Name, which He brings about through the Sefirot in accordance with the law He chose for them, are interdependent. Things emerge as consequences of one another. One thing is concealed within another, in the sense that one power may be acting in a hidden manner while outwardly it appears as if a different power is acting, yet the truth is that the manifest power acts only in accordance with the power concealed within it.
Therefore the Sefirot are seen taking all these forms and likenesses, appearing in the form of lights clothed within lights, or as lights emerging from other lights. All these forms and likenesses are what the soul sees when looking at the Sefirot. From seeing them, the soul gains an understanding of these phenomena on the spiritual plane, just as we gain knowledge of physical phenomena through the vision of the physical eye.