spirtual beings

The Self cannot be pierced by weapons or burned by fire; water cannot wet it, nor can the wind dry it. The Self cannot be pierced or burned, made wet or dry. It is everlasting and infinite, standing on the motionless foundations of eternity. The Self is unmanifested, beyond all thought, beyond all change. Knowing this, you should not grieve.
—  The Bhagavad Gita (2:23-25)