अहं कृत्स्नस्य जगतः प्रभवः प्रलयस्तथा ॥
मत्तः परतरं नान्यत्किञ्चिदस्ति धनञ्जय ।
मयि सर्वमिदं प्रोतं सूत्रे मणिगणा इव ॥
रसोऽहमप्सु कौन्तेय प्रभास्मि शशिसूर्ययोः ।
प्रणवः सर्ववेदेषु शब्दः खे पौरुषं नृषु ॥
Transliteration
ahaṃ kṛtsnasya jagataḥ prabhavaḥ pralayastathā || 6 ||
mattaḥ parataraṃ nānyat kiñcid-asti dhanañjayaḥ |
mayi sarvam idaṃ protaṃ sūtre maṇi-gaṇā iva || 7 ||
raso’ham-apsu kaunteya prabhāsmi śaśi-sūryayo |
praṇavaḥ sarva vedeṣu śabdaḥ khe pauruṣaṃ nṛṣu || 8 ||
Translation
"I am the creator, the sustainer and the destroyer of all the worlds", "[In this universe]There is nothing superior to Me, everything existing [in this universe] is connected to Me like Pearls on a thread", "I am the sapidity in water, the radiant lustre of the Sun and the moon, the primordial root syllable Om within all the Vedas,the subsonic element of sound in ether, and ability in man"
Purport
Now in these words, Bhagvan Shri Krishna explains that He alone is God, the supreme personality of Godhead.
In very clear terms, Bhavan says, there is nothing in this universe superior to him and He alone is the creator, sustainer, and destroyer of the whole universe. Going example Bhagvan Shri Krishna further explained, that this whole universe is connected to him, the same way pearls are connected to thread. His own potency reflects in everything living and non-living in this universe. Even the taste of Sapidity in water, the luster light and the vibration of sound all sustained by his own potency.
And Bhagvan Shri Krishna then says He himself is the primeval sound of the universe which is stated in Vedas, the "OM". For this reason, OM in other words used as the synonym of God, Supreme Shri Krishna.
These Shlokas and many who succeed in this chapter are one of the most important Shlokas for all of us to know about God. We should not anything or not but all of us should memorize these verses.