Srivasa Thakura was a close associate of Chaitanya Mahaprabhu and a member of the Pancha Tattva. Srivasa Thakura is understood as “Tatastha-Shakti”, a marginal energy of Bhagavan, Krishna in person. The devotees who are headed by Srivasa Thakura are described as 'parts' of transcendental body of Sri Chaitanya Mahaprabhu (his eyes, ears, hands, disc/chakra, etc.). They all participated in His transcendental pastimes. They all helped to spread Krishna consciousness, “Sankirtana-Yajna”. On the other hand, Srivasa is also Narada - an eternal transcendental associate of Lord Krishna. Srivasa was studying Srimad-Bhagavatam with Adwaitya Acharya, who was at that time in Navadvipa. They worshiped Krishna, who as an answer to their prayers, appeared as Caitanya Mahaprabhu and converted many atheists and others who were opposed to pure devotional service - making them all His loving devotees.