This is the effect of associating with a pure devotee. Our preachers who are preaching Krsna consciousness all over the world should follow in the footsteps of Narada Muni and become purified by following the four principles and chanting the Hare Krsna maha-mantra. This will make them fit to become Vaisnavas. Then, when they speak to sinful people about the teachings of this Krsna consciousness movement, people will be affected and take the instructions. We receive instructions in devotional service through the disciplic succession. Narada Muni is our original guru because he is the spiritual master of Vyasadeva. Vyasadeva is the spiritual master of our disciplic succession; therefore we should follow in the footsteps of Narada Muni and become pure Vaisnavas. A pure Vaisnava is one who has no ulterior motive. He has totally dedicated himself to the service of the Lord. He does not have material desires, and he is not interested in so-called learning and philanthropic work. The so-called learned scholars and philanthropists are actually karmis and jnanis, and some are actually misers engaged in sinful activity. All are condemned because they are not devotees of Lord Krsna.

"Abandon all varieties of religion and just surrender unto Me. I shall deliver you from all sinful reaction. Do not fear." (Bg. 18.66)