Lord Chaitanya said: This song sometimes makes Me so feverish that I cannot help dancing, laughing or crying. In truth, I am going crazy. First of all wondering if the chanting of the mantra [or the hymn];
Hare Krishna, hare Krishna, Krishna Krishna, hare hare, / Hare Rama, hare Rama, Rama Rama, hare hare.
Hadn't made Me lose my mind.
We read in the Narada-pancharatra that all Vedic rites, mantras and precepts are concentrated in the eight words:
Hare Krishna, hare Krishna, Krishna Krishna, hare hare.
Likewise, the Kalisantarana Upanishad states:
Hare Krishna, hare Krishna, Krishna Krishna, hare hare / Hare Rama, hare Rama, Rama Rama, hare hare.
These sixteen words are specifically intended to thwart the defilement of Kali. There is no alternative to singing these sixteen words to escape this contamination.
This is the transcendent nature of the Holy Names;
Hare Krishna, hare Krishna, Krishna Krishna, hare hare / Hare Rama, hare Rama, Rama Rama, hare hare,
they transport the human being into a kind of spiritual madness.
Anyone who sincerely chants or recites these Holy Names quickly rises to the level of the love of God, of which he goes mad. This condition, born out of love for God, is the first step towards human perfection.
The human being is generally interested in religion, in the economic development, in the satisfaction of the senses and in the liberation, but the love for God is beyond all these. When the authentic spiritual master chants the Holy Names;
Hare Krishna, hare Krishna, Krishna Krishna, hare hare / Hare Rama, hare Rama, Rama Rama, hare hare,
the transcendental vibration enters the ear of the disciple, and if the latter walks in the footsteps of his master and sings the Holy Name with so much respect, he comes to venerate the Holy Name. The Holy Name then sheds its own glories in the heart of the devotee, and when the latter fully qualifies to intone the spiritual vibration of the Holy Name, he becomes worthy to act as a spiritual master, in order to deliver all inhabitants of the earth.