What is the secret of hearing and chanting? A professional speaker cannot impress transcendental ecstasy within the hearts of the listeners. However, when a realized soul who is engaged in the service of the Lord is speaking, he has the potency to inject spiritual life within the audience. One should, therefore, seek the association of such pure, unalloyed devotees, and by such association and service a neophyte devotee will certainly develop attachment, love, and devotion for the Supreme Personality of Godhead.

From Srila Prabhupada’s “Nectar of Devotion”