If the unity of being mirrors void, it is mirroring nothing. If it mirrors nothing, and existence occurs through mirroring (repetition), then being is negated. This unified existence results in multiple existences considering being cannot be negated as only being exists. The negation of a singular unified being is multiple beings.
If the grand unity of being exists as one, the negation of this being through the voiding of said being results in multiplicity considering only being exists. To negate this unity of being is to result in multiplicity of said being. Being which is voided is being as multiple beings.
Void is the negation of said unity of being thus void can only be observed through multiplicity where one being is absent of another considering relationships require multiplicity and multiplicity necessitates differentiation where one being is absent of another.