In the beginning..when ray and day hadn't yet come into existence at all, there was a kind of radiance that illuminates universe. That radiance is the light of knowledge and goodness. That radiance will persistently and consistently shines brightly even after all the stars and moons in this vast universe died out.

Light of star gives light on space.Light of God gives birth to all stars.

Beyond the edge of universe,there's a kind of real darkness...where even the light gone astray.

Light lost in dark. Dark died in light.

When the first "let there be light" spoken, the entire electromagnetic spectrum is emitted.