Sri Krsna, the Personality of Godhead, who is the Paramatma [Supersoul] in everyones heart and the benefactor of the truthful devotee, cleanses desire for material enjoyment from the heart of the devotee who relishes His messages, which are in themselves virtuous when properly heard and chanted. It is the special mercy of the Supreme Lord that as soon as He knows that one is glorifying His name, fame and attributes, He personally helps cleanse the dirt from ones heart. Therefore simply by such glorification one not only becomes purified, but also achieves the results of pious activities (punya-sravana-kirtana). Punya-sravana-kirtana refers to the process of devotional service. Even if one does not understand the meaning of the Lords name, pastimes or attributes, one is purified simply by hearing or chanting of them. Such purification is called sattva-bhavana.