Countless universes reside like seeds within the skin pores of Mahā-Viṣṇu, and when He exhales, they are all manifested. In the material world we have no experience of such a thing, but we do experience a perverted reflection in the phenomenon of perspiration. We cannot imagine, however, the duration of one breath of Mahā-Viṣṇu, for within one breath all the universes are created and annihilated. This is stated in the Brahma-saṁhitā. Lord Brahmā lives only for the duration of one breath, and according to our time scale 4,320,000,000 years constitute only twelve hours for Brahmā, and Brahmā lives one hundred of his years. Yet the whole life of Brahmā is contained within one breath of Mahā-Viṣṇu. Thus it is not possible for us to imagine the breathing power of Mahā-Viṣṇu, who is but a partial manifestation of Lord Nityānanda. This the author of the Caitanya-caritāmṛta explains in the ninth verse.
In the tenth and eleventh verses Kṛṣṇadāsa Kavirāja describes Garbhodakaśāyī Viṣṇu and Kṣīrodakaśāyī Viṣṇu, successive plenary expansions of Mahā-Viṣṇu. Brahmā appears upon a lotus growing from the navel of Garbhodakaśāyī Viṣṇu, and within the stem of that lotus are so many planetary systems. Then Brahmā creates the whole of human society, animal society—everything. Kṣīrodakaśāyī Viṣṇu lies on the milk ocean within the universe, of which He is the controller and maintainer. Thus Brahmā is the creator, Viṣṇu is the maintainer, and when the time for annihilation arrives, Śiva will finish everything.
In the first eleven verses of the Caitanya-caritāmṛta, Kṛṣṇadāsa Kavirāja Gosvāmī thus discusses Lord Caitanya Mahāprabhu as Śrī Kṛṣṇa Himself, the Supreme Personality of Godhead, and Lord Nityānanda as Balarāma, the first expansion of Kṛṣṇa. Then in the twelfth and thirteenth verses he describes Advaitācārya, who is another principal associate of Lord Caitanya Mahāprabhu’s and an incarnation of Mahā-Viṣṇu. Thus Advaitācārya is also the Lord, or, more precisely, an expansion of the Lord. The word advaita means “nondual,” and His name is such because He is nondifferent from the Supreme Lord. He is also called ācārya, teacher, because He disseminated Kṛṣṇa consciousness. In this way He is just like Caitanya Mahāprabhu. Although Lord Caitanya is Śrī Kṛṣṇa Himself, He appeared as a devotee to teach people in general how to love Kṛṣṇa. Similarly, although Advaitācārya is the Lord, He appeared just to distribute the knowledge of Kṛṣṇa consciousness. Thus He is also the Lord incarnated as a devotee.