Among the limitations of the central metaphor of "light" are the physical inability of the luminary to withhold its radiance, the fulfilment of purpose the light gives the luminary, and the categorical differentiation between the source and its light. For God, the Creation metaphorically "arose in the Divine Will"[3] and was not impelled. The emanation of Creation fills no lack in the perfection of God.[4] The distinction between the Divine light (beginning with the Ohr Ein Sof - the primordial "Infinite Light", and subsequently the 10 Sephirot emanations) and the Divine Source (the Ein Sof "Infinite") appears only relative to Creation.