Ein-Sof

Ein-sof: The Kabbalistic Conception of God
Ein-Sof, the Infinite God, has no static, definable form. Instead, the Kabbalists conceive God, the world and humanity as evolving together through, and thus embodying, a number of distinct stages and aspects, with later stages opposing, but at the same time encompassing, earlier ones.
www.newkabbalah.com/einsof.html
Nothingness and the Problem of Creation Ex Nihilo   

Ein Sof - wikipedia.org
Ein Sof or Ayn Sof is a Kabbalistic term that usually refers to an abstract state of existence preceding God's Creation of the limited universe.
en.wikipedia.org/wiki/Ein_Sof

Ein Sof: Infinity
God's infinite light, before the beginning of the creative process.
www.inner.org/worlds/einsof.htm