Sri Sathya Sai Baba

The hymn in praise of the cosmic Person declares:

The entire cosmos, with all its component elements, is but one quarter of His glory. 

Paadosya Vishwa Bhuthaani.

Therefore, the cosmic Person is beyond bounds, measures, or degrees. The divine light (jyothi) illumines Heaven and beyond and reveals even Brahman. 

Sri Sathya Sai Baba

That which makes known by its splendour the era preceding the origin of living beings and the regions beyond even the farthest and the highest, “That” is indicated by the word jyothi. It shines in that supremest among supreme regions.

Note also that the same divine light shines everywhere, at all times, and in all beings. It comprises existence (asthi or sat), illumination-knowledge (bhathi or chit), and joy-bliss (priya or ananda). 

All things seen in the universe have the unseen as their base. All things that move have the unmoving as their base. So, too, for every living being, why, for the very cosmos itself, the invisible Brahman, the Supra-Truth, is the basis. It is this Para-brahman, the Omni-Self, that causes the cosmos to shine. “Divine light (jyothi)” is appropriate only for this light and not the limited, inferior, physical light. 

Divine light is total illumination

When Brahman also starts to vibrate, change, and move, total mergence, submergence (pralaya), happens. For example, when the train moves, if the rails on which it moves also move along, what about the fate of the passengers? When we walk, the road is stationary, so we are able to proceed safely along.

The light that shines individually is called the flame in the lamp; the light that illumines and reveals all is called divine light (jyothi).