Ein Sof

From Wikipedia: 

"Ein Sof, or Eyn Sof (/eɪn sɒf/, Hebrew: אֵין סוֹף‎ ʾēn sōf; meaning "infinite", lit. '(There is) no end'), in Kabbalah, is understood as God prior to 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" (she-en lo tiklah). Ein Sof may be translated as "unending", "(there is) no end", or infinity."

 

"Ain Soph in Kabbalah is God prior to His self-manifestation in the production of any spiritual Realm"

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"Ain Soph Aur is a term used in Jewish Kabbalah to summarize the manifested universe as it emanates from Consciousness. The term reflects The Unfolding of Creation as demarcated along three key creative states.

Ain (or Ayin); The Fabric of Consciousness in its original state of Undifferentiated Consciousness = a state of "I"-less/ego-less bliss.

Ain Soph → The Fabric of Consciousness as it existed after the initial Intensification of Consciousness and the consequent self-realization of I, but before the initiation of emanation. Once a monad existed in The Fabric, Consciousness became differentiated.

Ain Soph Aur → The Fabric of Consciousness as it exists during the perpetual and eternal emanation/unfolding of Physical Creation. Emanating Consciousness"

Above, from here.

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"The two forces of The Creator and the creation are known in Kabbalistic terms as the Ein Sof (Endlessness or אדוני בכבודו ובעצמו – The No-End Himself with all of His Glory) and the Ohr Ein Sof (Light of the Ein Sof). Creation as we can see, is considered the name of God, the reflection, God’s reputation and the place where the Divine shines His Light.

 
When we say Light (Orh), it is important to understand that it means a wide range of qualities and capacitiesin our world; the flow of goodness, protection from attracting negativity, harmony, beauty, creativity, clarity, strength and patience, the ability to see a bigger picture, finding peaceful solutions and implementing them in the world, and the very ability to stay connected, aligned and in an ongoing relation with the source of all blessings. The Creator / Sheffa/ Light; this entity of supreme intelligent, is who we want to attract to ourselves."

Above, from here.

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"All of creation emanates from the Ain Soph, but creation, in essence and in potency, is not equal to the Ain Soph.

The Ain Soph irradiates intelligence, a power by means of its divine Uncreated Light; an intelligence, a power that, if it originally participates in the perfection and infinitude of its (Ain Soph) own creed, it has a finite aspect because it is being derived from the Ain Soph. Unto this first spiritual emanation of the Ain Soph the Kabbalah gives the name the ineffable Ancient of Days who is the Being of our Being, the Father/Mother within us.

The Ain Soph, not being able to express Itself in the limited physical plane, does it through Its “ten Sephiroth.” "

Above, from here.