स्वयमेव भवति इति स्वयंभूः. He is not created by anyone. Atma exists by itself without depending on anything else for its existence. He as consciousness manifests in everything and is the cause for everything.
He is the giver of happiness. The real happiness is moksha. By knowing the Lord, through gyanam, due to his grace, one attains that ultimate happiness. Without the grace of Ishwara one cannot attain the ultimate happiness – moksha.
He is हिरण्यगर्भः. Sun shines in the morning and sets in the evening. This is not so. Sun always shines and is nityam. It is compared to parameshvara himself because everything shines with the Sun. however, the Sun depends on brahman for existence. If I (as consciousness), am not there, there is no Sun.
Bhagvad gita chapter 10/21:
आदित्यानामहं विष्णुर्ज्योतिषां रविरंशुमान् |
मरीचिर्मरुतामस्मि नक्षत्राणामहं शशी ll
I am the Aditya, I am the light. Sun is part of ME. All the stars are also part of ME. Krishna talks as supreme consciousness. The light and Vishnu is ME. I am the light of lights.
Bhagvad gita chapter 15/12:
यदादित्यगतं तेजो जगद्भासयतेऽखिलम् |
यच्चन्द्रमसि यच्चाग्नौ तत्तेजो विद्धि मामकम् ll
The tejas (radiance) obtained from the Sun, the jagat lights up. The light of the chandraH and fire also come from ME.
He is Lotus eyed. अक्षुः means the very form. The whole form is lotus which stands above the dirty pond. Dissolve the form, which is mithya, into the ultimate source.
स्वनः means sound. Maha means great. Sound represents in every aspect. Even the storms are regulated because of fear of Brahman, Sun rises. Brahman keeps everything in order. Bhagvan is expressed through the chanting of Vedas. These words come from the Lord’s mouth. All knowledge belongs to one source.
अनादि means that which has no beginning. निधनः means death. Bhagvan has no beginning or death.
Bhagvad Gita chapter 2/20
न जायते म्रियते वा कदाचि नायं भूत्वा भविता वा न भूय: |
अजो नित्य: शाश्वतोऽयं पुराणो न हन्यते हन्यमाने शरीरे ll
Atma is neither born nor dies, neither exists in the present nor in the future, is unborn, eternal, ever-existent, and ageless. It cannot kill or be killed.
Sustainer of the Universe.
The Shesha Naga is protector as per Vishnu Purana. The serpent is protecting Maha Vishnu from everything. Universe is protected by Vishnu. The protector is protected and the protector and the protected are always together. So, Brahman and you are not separate. There is no bhedaH. He has limitless power and supports the Universe.