How to recognize who is chanting the holy name purely (eg. bhajans) since we don't know how this devotee acts in his private life? Is it a good sign that while hearing our attention to hear the holy name increases as well as our desire to chant more? I am hankering to associate with advanced devotees with pure motives, but it is so difficult for a fallen soul like me to distinguish properly. Sometimes I consider a certain devotee pure or serious but then hear of some "skeletons in his closet" so I became somewhat discouraged.