A disciple serves the spiritual master with the sole purpose of getting instructions from him.
A. C. Bhaktivedanta Swami PrabhupadaWhen a pure devotee or spiritual master speak, what he says should be accepted as having been directly spoken by the Supreme Personality of Godhead in the Parampara System.
A. C. Bhaktivedanta Swami PrabhupadaThe Srimad-Bhagavatam states that any bona fide preacher of God consciousness must have the qualities of titiksa (tolerance) and karuna (compassion). In the character of Lord Jesus Christ we find both these qualities.
A. C. Bhaktivedanta Swami PrabhupadaOne must execute devotional service under the guidance of a devotee or directly under the guidance of the Supreme Personality of Godhead. It is not possible, however, to train oneself without guidance from the spiritual master.
A. C. Bhaktivedanta Swami PrabhupadaOut of many millions of wandering living entities, one who is very fortunate gets an opportunity to associate with a bonafide spiritual master by the grace of Krishna. By the mercy of both Krishna and the spiritual masters, such a person receives the seed of the creeper of devotional service.
A. C. Bhaktivedanta Swami Prabhupada