The purport is that even though one is a very learned scholar of the Vedic sastras, he may be completely unaware of the existence of the Supreme Personality of Godhead and His name, fame, qualities and so forth, whereas one who is not a great scholar can understand the position of the Supreme Personality of Godhead if he somehow or other becomes a pure devotee of the Lord by engaging in devotional service. Therefore this verse spoken by Yamaraja says, evam vimrsya sudhiyo bhagavati: those who engage in the loving service of the Lord become sudhiyah, intelligent, but this is not so of a Vedic scholar who does not understand Krsnas name, fame and qualities. A pure devotee is one whose intelligence is clear; he is truly thoughtful because he engages in the service of the Lordnot as a matter of show, but with love, with his mind, words and body. Nondevotees may make a show of religion, but it is not very effective because although they ostentatiously attend a temple or church, they are thinking of something else. Such persons are neglecting their religious duty and are punishable by Yamaraja. But a devotee who commits sinful acts, which he may do unwillingly or accidentally because of his former habits, is excused. That is the value of the sankirtana movement.