Then God said, "Let there be light." (see note)
This is not electric light or bright light but the light of subtle energy the first division of the universal consciousness to materialize itself. This substance of light cannot be seen but can be perceived. It also has a vibrational quality, but cannot be heard, but also can be "perceived" as a subtle "hum" or cyclical hum or aum, also called om, and now changed to "amen."
ASTRAL LIGHT travels at the rate of 500,000,000 miles per second, much faster than MATERIAL LIGHT (186,000,000 miles per second).
Note: In the Christian Bible, God creates the sun on the THIRD day. (1:14)
The conventions of our sense experience habituate us to the idea that light is always generated from a defined source, specific locus, or point in space. It is this presumption that permits us to perceive and conceive of defined or differentiated objects, space between objects, relative degrees of illumination, and also shadows.
But, truly, all space, all locations, all objects are equally pervaded by true, original, or fundamental Light, Universal Energy, or Transcendental Radiance. If we consider the nature of perception and cognition within that Light, which is omnidirectional or Infinite, then we realize that no objects, no degrees of light, no shadows, no differences can be found therein. Just so, if we Realize Ecstasy, or perfect inherence in the Transcendental Light wherein all objects or conventions of difference appear, then we transcend all differences, all states of body, mind, space, time, self, and relations.
True Ecstasy in the Living Divine Reality is self-transcending inherence in the selfless, mindless, bodiless, worldless Infinity of Radiance, Bliss, or Love. The literal Divine, the Radiant Reality that is only Obvious and not to be identified with any independently subjective or objective states, is Infinite Light, the condition of all conditions or permutations of light-energy. We must enter into the Presumption of that Condition via our native transcendence of the conventions of psycho-physical experience. Then that same Light will Transfigure and Transform us in every part, until there is not the slightest difference between us and that uninterrupted Glory.