13.78
ataeva prabhu tanre bale, ’bada bhai’
krsna, balarama dui--caitanya, nitai
SYNONYMS
ataeva—therefore; prabhu—Lord Caitanya; tanre—unto Visvarupa; bale—says; bada bhai—elder brother; krsna—Lord Krsna; balarama—and Baladeva; dui—two; caitanya—Lord Caitanya Mahaprabhu; nitai—and Lord Nityananda Prabhu.
Because Maha-sankarsana is the ingredient and efficient cause of the cosmic manifestation, He is present in every detail of it.
Lord Caitanya therefore called Him His elder brother.
The two brothers are known as Krsna and Balarama in the spiritual world, but at the present moment they are Caitanya and Nitai.
Therefore the conclusion is that Nityananda Prabhu is the original Sankarsana, Baladeva.