The Supreme Personality of Godhead, Krishna, is worshipable as a father is worshipable for his son. He is the spiritual master because He originally gave the Vedic instructions to Brahma and presently He is also instructing Bhagavad-gita to Arjuna; therefore He is the original spiritual master, and any bona fide spiritual master at the present moment must be a descendant in the line of disciplic succession stemming from Krishna. Without being a representative of Krishna, one cannot become a teacher or spiritual master of transcendental subject matter

Krishna’s devotees relate to Krishna in various relationships; one might treat Krishna as a son, or one might treat Krishna as a husband, as a friend, or as a master. Krishna and Arjuna are related in friendship. As the father tolerates, or the husband or a master tolerates, so Krishna tolerates