"It should be understood that a person who does not have Vedic knowledge always acts in ignorance of what he has done in the past, what he is doing at the present and how he will suffer in the future. He is completely in darkness. Therefore the Vedic injunction is, tamasi mā: 'Don't remain in darkness.' Jyotir gama: 'Try to go to the light.' The light or illumination is Vedic knowledge, which one can understand when he is elevated to the mode of goodness or when he transcends the mode of goodness by engaging in devotional service to the spiritual master and the Supreme Lord. This is described in the Śvetāśvatara Upaniṣad (6.23):
yasya deve parā bhaktir
yathā deve tathā gurau
tasyaite kathitā hy arthāḥ
'Unto those great souls who have implicit faith in both the Lord and the spiritual master, all the imports of Vedic knowledge are automatically revealed.' The Vedas enjoin, tad-vijñānārthaṁ sa gurum evābhigacchet: (MU 1.2.12) one must approach a spiritual master who has full knowledge of the Vedas and be faithfully directed by him in order to become a devotee of the Lord. Then the knowledge of the Vedas will be revealed. When the Vedic knowledge is revealed, one need no longer remain in the darkness of material nature."