Light and god have always been very interlinked in the spiritual or religious sense. Light being a symbol of illumination, knowledge, beauty, all pervading, all revealing and similarly darkness being heavily associated with evil, sin, ignorance, the unknown.

But I want to talk about the physics of light - a very peculiar phenomenon indeed.
Light has no position in space, as it is massless. It occupies no volume. A photon regardless of how energetic it is (gamma rays or infrared) always travels at the speed of light in a vacuum and is thus heavily woven into the idea of time as Einstein highlighted with his equation E=mc2. It appears to slow down through material but individual photons do not slow down their path is just riddled with bouncing around off material before exiting. You cannot see any light passing by you unless it is deflected into your eyes, when light doesn’t come into contact with an object, it’s as if it Isn’t there. When it does interact with objects it imparts colour, form, texture, some much detail about something that would otherwise be invisible, would others be total blackness.

At the speed of light, time has no duration, and distance is no object. The beginning and the end of lights journey is essentially instantaneous from that massless reference point. This is barely even conceivable - the Big Bang, all of existence of the universe, the end (if/ whatever that may be) all occurring in a spontaneous moment for a photon.

Not only is light linked with time by Einstein’s equation but also with mass. And this with dimension/ space as you cannot have one without the other. Einstein predicted that two highly energetic photons colliding and losing energy rapidly should produce some matter (an electron) and some anti-matter (a positron) and this was proven at CERN by physicists.
We’ve seen matter turned into light energy - think if combustion, nuclear explosions etc. But to turn light into matter was much more difficult however physics permits it and experiments proved it.

Because light is energy it cannot be created or destroyed, can only transform - into matter for example.
To tie it into the many concepts regarding god. Light seems to be a timeless, non physical, creator of the material (physical) world that hurtles through the universe faster than anything else can, reaching all corners (omnipresence), being all degrees of energy on the electromagnetic spectrum (omnipotence) and carrying with it the content of all information - the fastest exchanger of information between point A and B, the fundamental warmth and brightness required for a planet to sustain sentient beings.

I don’t know about all peoples descriptions of a possible god but to me the mere physical properties of light or any energy for that matter puts it top of the list of my personal contenders.