Ein Sof
Ein Sof, or Eyn Sof (, Hebrew: אֵין סוֹף ʾēn sōf; meaning "infinite", lit. '(There is) no end'), in Kabbalah, is understood as God before any self-manifestation in the production of any spiritual realm, probably derived from Solomon ibn Gabirol's (c. 1021 – c. 1070) term, "the Endless One" (שֶׁאֵין לוֹ תִּקְלָה, šeʾēn lo tiqlā). Ein Sof may be translated as "unending", "(there is) no end", or infinity.