In this chapter Lord Krishna will also describe various means of self-purification for development of higher states of consciousness culminating in realization of the Self gained in meditation, the highest form of purification.
The author of the Bhagavad-Gita is the enlightened sage Veda Vyasa. Five thousand years ago Vyasa wrote the Mahabhrata, one of India's two great epics, which has the text of the Gita at its core. It is said that in the Gita, the pocketbook of the Veda, Vyasa churned the cream of the Upanishads and put the butter in the mouth of Krishna.