Kṛṣṇa reveals the existence of a second, superior dimension. He says that beyond the manifest world and the dormant unmanifest energy, there is another unmanifest nature which is ‘sanātanaḥ’—eternal. This part of reality is never annihilated, even when the rest of the universe is destroyed. This is the spiritual sky, or the kingdom of God. It is ‘anti-material’ in the sense that it doesn’t follow the laws of decay and time. While our world is like a shadow that appears and disappears, this higher realm is the solid reality that casts the shadow. It is our original home. This verse provides the ultimate hope. We are not just particles in a recycling machine; we belong to an eternal family in an eternal world. Kṛṣṇa is telling Arjuna that the goal of his life is to migrate to this ‘Sanātana’ nature. The war is temporary, the body is temporary, but the soul and the spiritual world are forever.