Text 4] The Advent of Lord Kṛṣṇa: Introduction
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standing of life. For topics concerning Uttamaśloka, the Supreme Personality of Godhead, the spiritual master speaks, and the disciple hears with attention. Unless both of them are free from material desires, they cannot be interested in topics of Kṛṣṇa consciousness. The spiritual master and disciple do not need to understand anything more than Kṛṣṇa because simply by understanding Kṛṣṇa and talking about Kṛṣṇa, one becomes a perfectly learned person ( yasmin vijñāte sarvam evam vijñātam bhavati ). The Lord sits within everyone's heart, and by the grace of the Lord the devotee receives instructions directly from the Lord Himself, who says in  Bhagavad-gītā  (15.15):
sarvasya cāham hṛdi sanniviṣṭo mattaḥ smṛtir jñānam apohanam ca vedaiś ca sarvair aham eva vedyo vedānta-kṛd veda-vid eva cāham
"I am seated in everyone's heart, and from Me come remembrance, knowledge and forgetfulness. By all the  Vedas , I am to be known; indeed, I am the compiler of  Vedānta , and I am the knower of the  Vedas ." Kṛṣṇa consciousness is so exalted that one who is perfectly situated in Kṛṣṇa consciousness, under the direction of the spiritual master, is fully satisfied by reading  kṛṣṇa-kathā  as found in  Śrīmad-Bhāgavatam ,  Bhagavad-gītā  and similar Vedic literatures. Since merely talking about Kṛṣṇa is so pleasing, we can simply imagine how pleasing it is to render service to Kṛṣṇa.
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.  Karmīs , or persons attached to material sense enjoyment, generally cannot give up their material desires, but  kṛṣṇa-kathā  is such a potent medicine that if one is induced to hear  kṛṣṇa-kīrtana , he will certainly be freed from this disease. A practical