click on image to enlarge
…When discourses on kṛṣṇa-kathā take place between a liberated spiritual master and his disciple, others also sometimes take advantage of hearing these topics and also benefit. These topics are the medicine to stop the repetition of birth and death. The cycle of repeated birth and death, by which one takes on different bodies again and again, is called bhava or bhava-roga. If anyone, willingly or unwillingly, hears kṛṣṇa-kathā, his bhava-roga, the disease of birth and death, will certainly stop. Therefore kṛṣṇa-kathā is called bhavauṣadha, the remedy to stop the repetition of birth and death.
In India it is the practice among the general populace to hear about Kṛṣṇa, either from Bhagavad-gītā or from Śrīmad-Bhāgavatam, in order to gain relief from the disease of repeated birth and death. Although India is now fallen, when there is a message that someone will speak about Bhagavad-gītā or Śrīmad-Bhāgavatam, thousands of people still gather to hear. The following verse indicates, however, that such recitation of Bhagavad-gītā and Śrīmad-Bhāgavatam must be done by persons completely freed from material desires (nivṛtta-tarṣaiḥ).
If we hear the glories of the Supreme Personality of Godhead from liberated persons, this hearing will certainly free us from the bondage of material activities, but hearing Śrīmad-Bhāgavatam spoken by a professional reciter cannot actually help us achieve liberation. Kṛṣṇa-kathā is very simple. In Bhagavad-gītā it is said that Kṛṣṇa is the Supreme Personality of Godhead. As He Himself explains, mattaḥ parataraṁ nānyat kiñcid asti dhanañjaya: “O Arjuna, there is no truth superior to Me.” Simply by understanding this fact—that Kṛṣṇa is the Supreme Personality of Godhead—one can become a liberated person. (Purport SB 10.1.4)
Full Verse and Purport More
The Hare Krishna Movement 