Srila Prabhuapda: Generally a human being is interested in religion, economic development, sense gratification and liberation, but love of God is above all these. A bona fide spiritual master chants the holy names-Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare-and the transcendental sound vibration enters into the ear of the disciple, and if a disciple follows in the footsteps of his spiritual master and chants the holy name with similar respect, he actually comes to worship the transcendental name. When the transcendental name is worshiped by the devotee, the name Himself spreads His glories within the heart of a devotee. When a devotee is perfectly qualified in chanting the transcendental vibration of the holy name, he is quite fit to become a spiritual master and to deliver all the people of the world. The chanting of the holy name is so powerful that it gradually establishes its supremacy above everything in the world. The devotee who chants it becomes transcendentally situated in ecstasy and sometimes laughs, cries and dances in his ecstasy. Sometimes the unintelligent put hindrances in the path of chanting this mahā-mantra, but one who is situated on the platform of love of Godhead chants the holy name loudly for all concerned. As a result, everyone becomes initiated in the chanting of the holy names-Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare. By chanting and hearing the holy names of Kṛṣṇa, a person can remember the forms and qualities of Kṛṣṇa. (Teachings of Lord Caitanya – 1968 Edition, Chapter 18)
Srila Prabhupada: “But always remember that I am always with you. As you are always thinking of me, I am always thinking of you also. Although physically we are not together, we are not separated spiritually. So we should be concerned only with this spiritual connection.”
(Srila Prabhupada letter, 13/11/69)
In the Fourth Canto of Śrīmad-Bhāgavatam, 29th Chapter, 37th verse, the importance of hearing of the pastimes of the Lord is stated by Śukadeva Gosvāmī to Mahārāj Parīkṣit: “My dear King, one should stay at a place where the great ācāryas [holy teachers] speak about the transcendental activities of the Lord, and one should give aural reception to the nectarean river flowing from the moonlike faces of such great personalities. If someone eagerly continues to hear such transcendental sounds, then certainly he will become freed from all material hunger, thirst, fear and lamentation, as well as all illusions of material existence.”
In this age it is very difficult to follow thoroughly the regulative principles and studies of the Vedas which were formerly recommended. However, if one gives aural reception to the sound vibrated by great devotees and acaryas, that alone will give him relief from all material contamination. Therefore it is the recommendation of Caitanya Mahaprabhu that one should simply hear from authorities who are actually devotees of the Lord. Hearing from professional men will not help. If we hear from those who are actually self-realized, then the nectarean rivers, like those which are flowing on the moon planet, will flow into our ears. This is the metaphor used in the above verse. (Nectar of Devotion, Chapter 10)