In the previous verse it has been said (grihīta-māyā-guna-vigrahāya) that the Lord accepts three kinds of bodies (Vishnu, Brahmā and Śiva) for the purposes of creating, maintaining and annihilating the cosmic manifestation. The three predominating deities of the material universe — Brahmā, Vishnu and Śiva — are called guna-avatāras. There are many kinds of incarnations of the Supreme Personality of Godhead, and the first incarnations within this material world are Brahmā, Vishnu and Maheśvara (Śiva). Out of these three, Lord Brahmā and Lord Śiva accept material bodies, but Lord Vishnu does not accept a material body. Lord Vishnu is therefore known as viśuddha-sattva. His existence is completely free from the contamination of the material modes of nature. One should therefore not think that Lord Vishnu is in the same category with Lord Brahmā and Śiva. The śāstras forbid us to think in this way:
yas tu nārāyanam devam
brahma-rudrādi-daivataih
samatvenaiva vīksheta
sa pāshandī bhaved dhruvam
One who considers Lord Vishnu to be in the same category with devas like Lord Brahmā or Lord Śiva or who thinks Lord Brahmā and Śiva to be equal to Lord Vishnu is to be considered as pāshandī, a faithless nonbeliever. Therefore in this verse Lord Vishnu is distinguished in the words namo viśuddha-sattvāya. Although a living entity like us, Lord Brahmā is exalted due to his pious activities; therefore he is given the high post of Brahmā. Lord Śiva is not actually like a living entity, but he is not the Supreme Personality of Godhead. His position is somewhere between Vishnu, the Supreme Personality of Godhead, and Brahmā, the living entity. Lord Śiva is therefore explained in Brahma-samhitā (5.45) in this way:
kshīram yathā dadhi vikāra-viśesha-yogāt
sañjāyate na hi tatah prithag asti hetoh
yah śambhutām api tathā samupaiti kāryād
govindam ādi-purusham tam aham bhajāmi
Lord Śiva is considered to be like yogurt (dadhi). Yogurt is nothing but transformed milk; nonetheless, yogurt cannot be accepted as milk. Similarly, Lord Śiva holds almost all the powers of Lord Vishnu, and he is also above the qualities of the living entity, but he is not exactly like Vishnu, just as yogurt, although transformed milk, is not exactly like milk.
The Supreme Personality of Godhead is also described herein as vāsudevāya krishnāya. Krishna is the original Supreme Personality of Godhead, and all Vishnu expansions are His plenary portions or portions of His plenary portions (known as svāmśa and kalā). The svāmśa, or direct expansion, is also called amśa. All vishnu-tattvas are svāmśa, direct parts and parcels of the Supreme Personality of Godhead, Krishna. Krishna is known as Vāsudeva because He appeared in this material world as the son of Vasudeva. Similarly, He is known as Devakī-nandana, Yaśodā-nandana, Nanda-nandana and so on.
Again and again the Lord is very much interested in increasing the influence of His devotees. Therefore He is described herein as prabhave sarva-sātvatām. The sātvata community is a community of Vaishnavas, pure devotees of the Lord. The Supreme Personality of Godhead has unlimited powers, and He wants to see that His devotees are also entrusted with unlimited powers. Therefore a devotee of the Lord is always distinguished from all other living entities.
The word hari means “one who takes away all miserable conditions,” and hari-medhase means that the Lord is always planning ways to deliver the conditioned soul from the clutches of māyā. The Lord is so kind that He personally incarnates to deliver the conditioned souls, and whenever He comes, He makes His plans:
paritrānāya sādhūnām
vināśāya ca dushkritām
dharma-samsthāpanārthāya
sambhavāmi yuge yuge
“To deliver the pious and to annihilate the miscreants, as well as to reestablish the principles of religion, I Myself appear millennium after millennium.” (Bg. 4.8)
Since the Lord delivers all conditioned souls from the clutches of māyā, He is known as hari-medhas. In the list of incarnations, Krishna is described as the supreme and original Personality of Godhead:
ete cāmśa-kalāh pumsah
krishnas tu bhagavān svayam
indrāri-vyākulam lokam
mridayanti yuge yuge
(Bhāg. 1.3.28)
Krishna, the original Personality of Godhead, appears in this material world when the demigods, who are devotees of the Lord, are disturbed by the demons.