The cultivation of Krishna Consciousness is possible where great devotees live together and constantly engage in hearing and chanting the glories of the Lord.
Simply by the association of pure devotees one can understand the transcendental name, fame, quality and activities of the Supreme Personality of Godhead.
Simply by associating with a pure devotee, one becomes wonderfully advanced in Krishna Consciousness. Sadhu-sanga, or association with a devotee, means always engaging in Krishna Consciousness by chanting the Hare Krishna mantra but he whose heart is contaminated sees things differently. Therefore by sat-sanga, or association with devotees, one becomes perfectly pure in heart.
It is imperative that one approaches a spiritual master, for by such association one proportionately develops his consciousness towards the Supreme Personality of Godhead.