The full light of God is so bright that it is hard for us to take, much like looking straight into the sun. But, when the Kingdom Comes in its fullness, we will be in the un-mediated presence of the Trinity. We will see the face of God in all its blazing brightness. We will be in the presence of All That Is Real.
Most of us instinctively know that we cannot bear this much reality, this much beauty; that we cannot see the face of God and live. I am reminded of C. S. Lewis’ description of heaven in The Great Divorce where even heaven’s grass is so real that it hurts the feet those who are not ready to participate in the Kingdom.
The Brightness of the Kingdom Fullness and our inability to bear it are also spoken of in the Jewish Mystic tradition of Kabbalah, and is intimately tied to God’s creative work in the world. (Note: Kabbalah holds that God made multiple worlds, and various other things with which I do not agree, but I do find much of the tradition to be very evocative and helpful to me as a Christian.) Below is an article by Tzvi Freeman describing something of this dynamic, which is called Tsimtsum (or creative withdrawal) — See Note 1 for a link to the entire article.
What Is Tsimtsum?
Presence Through Absence
If you were to create a world, the first thing you would need to master is tsimtsum. Tsimtsum is a way of being present in your absence. ….
Tsimtsum literally means “reduction.” For a Kabbalist, a tsimtsum is a reduction of the divine energy that creates worlds—something like the transformers that reduce the voltage of the electric current leaving the turbine generators, until it’s weak enough for a standard light bulb to handle. So too, the divine energy needs to be stepped down so that the created worlds can handle it.
… Existence requires some sort of connection to the initial source of everything—meaning, to the Creator.
[There is a] type of tsimtsum, described by the master Kabbalist, Rabbi Isaac Luria, known as “the Ari.” It is the primal tsimtsum, and it is unique from all other tsimtsumim.
Much like the irrational number pi, the primal tsimtsum transforms an infinite circle into a measured line. The Ari described an initial, pre-creation state of infinite light, within which there was no place for anything at all to be. Before creating any worlds, the Creator withdrew that energy completely, resulting in a total void within the infinite light. Only then did He extend into this void a metered line of light from the encompassing infinite light, with which He generated an innumerable series of worlds.
Tsimtsum, then, is the way G‑d makes space for us to have our own world. He hides His light from us, so that we can make our own choices. But He remains immanently present within that hiddenness. In a way, He is yet more present in His absence than in His presence.
NOTES:
1. http://www.chabad.org/library/article_cdo/aid/2047206/jewish/Tsimtsum.htm
2. The Photo at the top of this entry can be found at http://www.officialpsds.com/images/thumbs/Big-Bright-light-psd38714.png
Thoughts & Images from the Heart 
Fascinating! And by the way, The Great Divorce was one of my favorites. Happy Thanksgiving!