Brahman alone is real, the world is the appearance [of Brahman]; and there is ultimately no difference between Brahman and Atman, individual self.
To be free from bondage the wise person must practise discrimination between One-Self and the ego-self. By that alone you will become full of joy, recognising Self as Pure Being, Consciousness and Bliss.
By the raft of Knowledge alone will you be borne over all sin.
Know Him, the Purusha, who alone is to be known . . . that death may not affect you.