It is also stated that Lord Kṛṣṇa descends to the material world in order to vanquish all the demons, but some say that Kṛṣṇa is the incarnation of Viṣṇu who lies in the ocean of milk within this universe. Śrīla Rūpa Gosvāmī in his Laghu-bhāgavatāmṛta and his commentator, Śrī Baladeva Vidyābhūṣaṇa, have discussed these points fully and have established the exact truth. Śrī Jīva Gosvāmī also discussed these points in the Kṛṣṇa-sandarbha.
When Lord Caitanya finished His instructions to Śrī Sanātana Gosvāmī, Sanātana, being empowered and enlightened, was so transcendentally pleased that he at once fell at the feet of Lord Caitanya and said: "I am born of a very low family, and I have always associated with lowly people; therefore I am the lowest of sinners. Yet You are so kind that You have taught me lessons which are not even understood by Lord Brahmā, the greatest being in this universe.