Sound Vibration of The Hare Krishna Mantra
The sound vibration of the Hare Krishna mantra, although presented in the ordinary alphabet, should not be taken as mundane or material.
Srimad bhagavatam 4.9.4,
Srila Prabhupada.
Best Means of Spiritual Realization
The best means of spiritual realization is chanting the holy name of the Lord.
Bhagavad Gita 6.11-12,
Srila Prabhupada.
Becoming Purified of All Material Contamination
Any person who is chanting the holy names of Krishna (Hare Krishna, Hare Krishna, Krishna Krishna, Hare Hare/ Hare Rama, Hare Rama, Rama Rama, Hare Hare) in course of chanting without offenses feels some transcendental pleasure and very quickly becomes purified of all material contamination.
Bhagavat Gita 9.2,
Srila Prabhupada.
Cleaning The Dust From The Heart
Caitanya Mahaprabhu has recommended that everyone chant the Hare Krishna mantra just to cleanse the dust from the heart. If the dust of the heart is cleansed away, then one can actually understand the importance of the holy name.
Nectar of Devotion, Chapter 12,
Srila Prabhupada
Glories of The Holy Name
Living beings who are entangled in the complicated meshes of birth and death can be freed immediately by even unconsciously chanting the holy name of Krishna, which is feared by fear personified. — Srimad Bhagavatam, 01.01.15.
Killing The Mind of A Person
Terrorist guns can kill the material body, but the Holy Name of the Lord can kill the enemies within the mind of the person.