Bhagavad Gita Chapter 13
OUR IGNORANCE THE WALL
Kṣetri is the Self. This Self illumines all the kṣetra, all the bodies. Not just our body or kṣetra is illumined but all the kṣetra are illumined. The consciousness present in each of us is the hologram of the supreme Self. So there is no separation between the consciousness present in our body and the consciousness present in a plant or a rock. Everything is the same energy.
The sun lights up everything that is around. There is no partiality. It does not discriminate. Whatever comes its way, it removes the darkness from it. In the same way, the supreme Self present in us illuminates everything in the Universe. Our ignorance separates the soul from the Supreme Soul.