Balarama,  also known as Baladeva, Baldau, Balabhadra  and Halayudha, is the elder  brother of the divine being, Krishna in Hinduism. Within Vaishnavism  and a number of South Indian, Hindu traditions Balarama is worshipped as  an avatar of Vishnu, and he is also listed as such in the Bhagavata  Purana. Within both the Vaishnava traditions and Hinduism generally he  is acknowledged as being a manifestation of Shesha, the serpent on whom  Vishnu rests.
The Bhagavata  Purana describes Krishna as the original Supreme Personality of Godhead  from whom everything else emanates. As part of this divine 'emanation',  Krishna's very first expansion is Balarama, and from Balarama all other  incarnations of God then appear. Of the three transcendental elements  described in Sanskrit as sat, cit and ananda (eternity, knowledge and  bliss), Balarama is in charge of eternity and knowledge. Hence he is  worshipped as the supreme teacher or Adiguru