अजोऽपि सन्नव्ययात्मा भूतानामीश्वरोऽपि सन् |
प्रकृतिं स्वामधिष्ठाय सम्भवाम्यात्ममायया || 6||
ajo ’pi sannavyayātmā bhūtānām īśhvaro ’pi san
prakṛitiṁ svām adhiṣhṭhāya sambhavāmyātma-māyayā
ajaḥ—unborn; api—although; san—being so; avyaya ātmā—Imperishable nature; bhūtānām—of (all) beings; īśhvaraḥ—the Lord; api—although; san—being; prakṛitim—nature; svām—of myself; adhiṣhṭhāya—situated; sambhavāmi—I manifest; ātma-māyayā—by my Yogmaya power
Though unborn and eternal in My being, the Lord and controller of all beings, controlling My own nature, I come into being by the power of My Maya-Sakti.
In the previous verse, the Lord said that He too had passed through several births. And now, in order to clear any misconception concerning the nature of this birth, the Lord explained the mystery and significance of his incarnation.
The common man takes birth as an effect of his own Karma. But the Lord has no such Karma to work out, and nothing has power over him. He is himself the Supreme Lord and master of the whole universe and rules over it by His mysterious power of Maya. Why then should he take birth? It is for the purpose of doing good to the world. He takes a form by His own will, using the power of Maya as His instrument. Three attributes of the Lord are mentioned here. He has no birth (Ajah). He is eternal (Avyayatma). He is the Supreme Lord of all beings (Bhutanam isvarah). From this, we understand that Lord Krishna is apparently the son of Devaki and Vasudeva, but really the Eternal Being, the Lord of the Universe.
Swami Vivekananda Says —
Then Krishna says, “O Arjuna, you and I have run the cycle of births and deaths many times, but you are not conscious of them all. I am without beginning, birthless, the absolute Lord of all creation. I through my own nature take form … .”[Source]
Question: What is the nature of the Lord?
Answer: He is birthless, eternal, the controller of all beings, and the Lord of Maya.
Question: How then does He take birth as a personal being?
Answer: By controlling His nature, God incarnates Himself as a personal being by the power of His own Maya.