divi sooryasahastrasya bhavedyugapadutthitaa |
yadi bhaahaa sadrishee saa syaadbhaasastasya mahaatmanaha || 12 ||

Should thousands of suns happen to rise in the sky simultaneously, their blaze would resemble the light of that magnificent one.
divi : in the sky
sooryasahastrasya : thousands of suns
bhavet : happen
yugapat : simultaneously
utthitaa : rise
yadi : should
bhaahaa : light
sadrishee : resemble
saa : those
syaat : happen
bhaasaha : blaze
tasya : of that
mahaatmanaha : magnificent one
To better give us an idea of the level of cosmic form’s brightness, Sanjaya compares to the radiance emitted by an infinite number of suns rising at the same time. Note that “sahasra” means infinite and not the literal meaning, which is thousand. Some scientists who have witnessed nuclear explosions have also used similar language to describe something that is bright beyond comparison.
So where does this radiance come from? Let us investigate. The Brihadaranyaka Upanishad is one of the primary texts that discusses topics regarding the eternal essence. In one instance, it uses the phrase “effulgent infinite being” to describe the eternal essence. This is the source of the radiance. We never get to experience it because it is covered up by the material world. In this case, Shri Krishna enabled Arjuna to see the infinite light and radiance of the eternal essence in its pristine form.
We also have to remember that the comparison made by Sanjaya is helpful, but compares two things that are difficult to compare. Even the brilliance of infinite suns is still a brilliance of the material world, whereas Ishvara’s brilliance is divine, far superior that any material brilliance.