In spiritual life, one must conduct one's whole life under the guidance of the guru. Only one who executes his spiritual life under the direction of the spiritual master can achieve the mercy of Krishna.
A. C. Bhaktivedanta Swami PrabhupadaSince one cannot visually experience the presence of the Supersoul, He appears before us as a liberated devotee. Such a spiritual master is none other than Krishna himself.
A. C. Bhaktivedanta Swami PrabhupadaThere is a word Kristos in the Greek dictionary, and this word is supposed to be borrowed from the Sanskrit word "Krishna," and Christ is derived from Kristos.
A. C. Bhaktivedanta Swami PrabhupadaA disciple serves the spiritual master with the sole purpose of getting instructions from him.
A. C. Bhaktivedanta Swami Prabhupada