“Sri Chaitanya Mahaprabhu says that if one chants the holy name even once he is considered a Vaishnava and the best of human beings; he is worshipable and worthy of service. But Srila Prabhupada clarifies that that chanting of one name should be done with faith. He makes the point that even if one is a neophyte, if one has faith that the holy name of Krishna is Krishna Himself, he is a pure devotee and by his association others can become devotees. He is considered a pure devotee based on his faith that the holy name of Krishna and Krishna Himself are identical. He may be new and not very knowledgeable in scripture—which is what distinguishes a neophyte from an advanced devotee—but because he has that faith and chants the holy name of Krishna without offense, he is considered a pure devotee. And by chanting just one name of Krishna without offense he becomes free from all sinful reactions. So, faith is a most important factor in Krishna consciousness.