There are so many prescribed mantras for liberation. Oṁkāra-sarva-vedeṣu. Every Vedic mantra begins with oṁkāra, and He is Kṛṣṇa. Vedic mantra, we chant Vedic mantra. There are many, many Vedic mantras in Upaniṣad and tantras, saṁhitā. So the (indistinct) begins with the combination of alphabets a, u, ma-Om. Oṁ tad viṣṇuṁ paramaṁ padaṁ sadā paśyanti sūrayaḥ. Everything. Oṁ namo bhagavate vāsudevāya. Every Vedic mantra begins with the oṁkāra. Some of them are very much fond of chanting omkara instead of Hare Kṛṣṇa. So there is no objection. Kṛṣṇa says, praṇavaḥ sarva-vedeṣu. Praṇava means oṁkāra.
So actually only Kṛṣṇa is there, Parabrahman. He is only. Sarvaṁ khalv idaṁ brahma. Expansion in different varieties of multimanifestation. But if we analyze all these things, ultimately we come to the point that Kṛṣṇa is everything. That requires intelligence, how to analyze. Therefore here it is said this manifestation, this material manifestation, is guṇa guṇino mahad-ādayo, manaḥ, mind, intelligence, the five gross elements, three subtle elements, and all, and manufactured, these demigods, animals, men, martyāḥ, 8,400,000 species. So all these varieties, actually it is simply, they are simply manifestation of Kṛṣṇa's different manifestation of energy, nothing else. The real center point is Kṛṣṇa.