CC Madhya 24.252
tāṅra vākya śuni’ mane bhaya upajila
“In this way, through the association of the great sage Nārada Muni, the hunter was a little convinced of his sinful activity. He therefore became somewhat afraid due to his offenses.
This is the effect of associating with a pure devotee. Our preachers who are preaching Kṛṣṇa consciousness all over the world should follow in the footsteps of Nārada Muni and become purified by following the four principles and chanting the Hare Kṛṣṇa mahā-mantra. This will make them fit to become Vaiṣṇavas. Then, when they speak to sinful people about the teachings of this Kṛṣṇa consciousness movement, people will be affected and take the instructions. We receive instructions in devotional service through the disciplic succession. Nārada Muni is our original guru because he is the spiritual master of Vyāsadeva. Vyāsadeva is the spiritual master of our disciplic succession; therefore we should follow in the footsteps of Nārada Muni and become pure Vaiṣṇavas. A pure Vaiṣṇava is one who has no ulterior motive. He has totally dedicated himself to the service of the Lord. He does not have material desires, and he is not interested in so-called learning and philanthropic work. The so-called learned scholars and philanthropists are actually karmīs and jñānīs, and some are actually misers engaged in sinful activity. All are condemned because they are not devotees of Lord Kṛṣṇa.
Everyone has a chance to become purified by associating with this Kṛṣṇa consciousness movement and strictly following the rules and regulations. By chanting the Hare Kṛṣṇa mahā-mantra, one can become free from all contamination, especially contamination brought about by the killing of animals. Lord Kṛṣṇa Himself requests:
ahaṁ tvāṁ sarva-pāpebhyo mokṣayiṣyāmi mā śucaḥ
“Abandon all varieties of religion and just surrender unto Me. I shall deliver you from all sinful reactions. Do not fear.” (Bg. 18.66)
We should take this instruction from Kṛṣṇa and follow in the footsteps of Nārada Muni in the disciplic succession. If we simply surrender unto Kṛṣṇa’s lotus feet and take this Kṛṣṇa consciousness movement seriously, we can be freed from the karma incurred by sin. If we are intelligent enough, we shall engage in the loving service of the Lord. Then our lives will be successful, and we shall not have to suffer like the hunter life after life. By killing animals, not only will we be bereft of the human form but we will have to take an animal form and somehow or other be killed by the same type of animal we have killed. This is the law of nature. The Sanskrit word māṁsa means “meat.” It is said, māṁ saḥ khadati iti māṁsaḥ. That is, “I am now eating the flesh of an animal who will some day in the future be eating my flesh.”