In the first six chapters of Bhagavad-gita, the living entity has been described as nonmaterial spirit soul which is capable of elevating himself to self-realization by different types of yogas. At the end of the Sixth Chapter, it has been clearly stated that the steady concentration of the mind upon Krsna, or in other words Krsna consciousness, is the highest form of all yoga. By concentrating one's mind upon Krsna, one is able to know the Absolute Truth completely, but not otherwise. Impersonal brahmajyoti or localized Paramatma realization is not perfect knowledge of the Absolute Truth because it is partial. Full and scientific knowledge is Krsna, and everything is revealed to the person in Krsna consciousness. In complete Krsna consciousness one knows that Krsna is ultimate knowledge beyond any doubts. Different types of yoga are only steppingstones on the path of Krsna consciousness. One who takes directly to Krsna consciousness automatically knows about brahmajyoti and Paramatma in full. By practice of Krsna consciousness yoga, one can know everything in full—namely the Absolute Truth, the living entities, the material nature, and their manifestations with paraphernalia.

One should therefore begin yoga practice as directed in the last verse of the Sixth Chapter. Concentration of the mind upon Krsna the Supreme is made possible by prescribed devotional service in nine different forms, of which sravanam is the first and most important. The Lord therefore says to Arjuna, "tat srnu," or "Hear from Me." No one can be a greater authority than Krsna, and therefore by hearing from Him one receives the greatest opportunity for progress in Krsna consciousness. One has therefore to learn from Krsna directly or from a pure devotee of Krsna—and not from a nondevotee upstart, puffed up with academic education.

In the Srimad-Bhagavatam this process of understanding Krsna, the Supreme Personality of Godhead, the Absolute Truth, is described in the Second Chapter of the First Canto as follows: