Tulsidas Ji says:
जगु पेखन तुम्ह देखनिहारे। बिधि हरि संभु नचावनिहारे॥
तेउ न जानहिं मरमु तुम्हारा। औरु तुम्हहि को जाननिहारा॥Jagu pekhan tumh dekhanihāre. Bidhi Hari Sambhu nachāvanihāre.
Teu na jānahiṇ maramu tumhārā. Auru tumhahi ko jānanihārā.- Ramayan (Ayodhya Kand) 2.127
“O Krishna, who could know You? When Vishnu, Shiva, and Brahma cannot know You, and they just dance according to the tune that You play, then what claim could anyone else make to know You?”
So now you are starting to understand the greatness of Shree Krishna. Brahma, the creator of our brahmand (universe); Vishnu of kshirsagar (the ocean of milk), the protector of our brahmand; and Shiv of Kailash (the Divine abode of Shiv), the destroyer of our brahmand are all just one among an infinite number of Brahmas, Vishnus, and Shankars who are all just an aṇsh (partial expansion) of Maha Vishnu, who is the creator of the whole universe.
And He who creates the whole universe with a mere thought,
ईक्षतेर्नाशब्दम् ॥
Īkṣhater nāśhabdam- Brahma Sutra, chapter 1, section 1, sutra 5
does not have to say anything or do anything. He just thinks, and the universe is created. That Maha Vishnu, Maha Narayan, is but one small aṇsh of Shree Krishna.
Let’s understand from another perspective. The Bhagwatam says,
अवतारा ह्यसङ्ख्येया हरे: सत्त्वनिधेर्द्विजा: ।
Avatārā hyasaṅkhyeyā hareḥ sattva-nidher dvijāḥ.- Bhagwatam 1.3.26
There are infinite avatars (Divine descensions) of Bhagwan (the Supreme Lord). So I told you, brahm (the formless aspect of God) is established in Shree Krishna. Paramatma (the all-pervading Supreme Soul) is established in Shree Krishna. Well, guess what?
एते चांशकला: पुंस: कृष्णस्तु भगवान् स्वयम् ।
Ete chāṁśha-kalāḥ puṇsaḥ kṛṣhṇastu bhagavān swayam.- Bhagwatam 1.3.28
He Himself is Bhagwan.
Bhagwan means Shree Krishna as Shree Krishna, revealing His total lovingness. So the almighty forms of God are all considered Paramatma. They are all established in Shree Krishna. And formless God is also established in Him. And He is Swayam Bhagwan (the original Supreme Personality of Godhead).
So one single Shree Krishna appears as Himself, Bhagwan; appears as all the almighty forms, Paramatma, who are all His aṇsh or aṇsh of His aṇsh; and He also exists as formless brahm. All of those unlimited avatars, all of those unlimited forms of God who visit our earth or appear on Earth, they are all His aṇsh.
एते चांशकला: …
Ete chāṁśha-kalāḥ …From Bhagwatam 1.3.28 (quoted earlier)
