In the Hare Krishna movement, they believe that knowledge has been transmitted
down from Lord Krishna, over the ages, via disciplic succession, or parampara.
This is the parampara of the International Society for Krishna Consciousness, or
Sri Brahma-Madhva Gaudiya Vaishnava sampradya
Srila Vyasaraya mutt
- Jaya Tirtha
- Brahmanya Tirtha
- Vyasa Tirtha
- Madhavendra Puri
- Ishvara Puri, (Nityananda, Advaita)
- Lord Caitanya
- Rupa, (Svarupa, Sanatana) (*)
- Raghunatha, Jiva (*)
- (Baladeva), Jagannatha
- Bhaktisiddhanta Sarasvati
- A.C. Bhaktivedanta Swami Prabhupada
(*) see also the Six Gosvamis
The word parampara, generally translated as "disciplic succession", is found in the Gita, where Krishna says
"Evam parampara-praptam imam rajarshayo viduh
This supreme science was thus received through the chain of disciplic succession,
and the saintly kings understood it in that way."
-- Bg. 4.2
There Krishna reveals that the knowledge of the Gita being spoken to Arjuna is the same as that which he himself had taught to Vivasvant, who had told it to Manu, who had told it to Ikshvaku the first human in the line. In the course of time the message had been lost and he had become incarnate specifically to reestablish this knowledge by speaking it to Arjuna.
N.B. At time of writing, there was a very detailed explanation at: http://members.nbci.com/hknetworks/guru-parampara-contents-page.htm.