Ekāṁśena sthito jagat. This material manifestation, with innumerable universes, is only a one part of manifestation of the Supreme Lord. Ekāṁśena sthito jagat. These descriptions are there in the Bhagavad-gītā.
So we should always remember that we are reading Bhagavad-gītā and we should understand it as it is. We should not make any interpretation. That is the wrong thing. And if there was some necessity of interpretation, we . . . you should not think that Kṛṣṇa left the matter for being interpreted by in later age by some scholar. Or He could have disclose this Himself. He was quite competent. No. There is no question of interpretation. We have to understand Bhagavad-gītā as it is. If we cannot understand, that is a defect in me, not in the Bhagavad-gītā. So we have to find out the defect in me.
So Lord Kṛṣṇa says, ajo 'pi sann avyayātmā bhūtānām īśvaro 'pi san: "Although I am the Lord, I am the Supreme Lord of everything, and although I am unborn, aja, and avyayātmā, I have no change, still, prakṛtiṁ svām adhiṣṭhāya." Prakṛtiṁ svām.
Now, you should know there are two kinds of prakṛti. Prakṛti means nature. You'll find it in the Seventh Chapter of Bhagavad-gītā that the Lord says that He has got two . . . why Lord says? In the Vedic scripture also we'll find, parāsya śaktir vividhaiva śrūyate (Śvetāśvatara Upaniṣad 6.8); "There are different kinds of nature of the Supreme." Svābhāvikī jñāna-bala-kriyā ca. So out of many kinds of nature of the Supreme Lord, they have divided the whole thing into three division. One is called external nature and the other is called internal nature. And there is another nature, which is called marginal nature. The external nature, the material world, manifestation of this material world, is external nature. And this is described in the Bhagavad-gītā, as we'll find it in the Seventh Chapter, that apareyam. Aparā. Aparā means inferior or lower nature. Lower nature. So He has got higher nature.
One may question that "Why? The Supreme Lord is all-good. Why He has got higher nature and lower nature?" Yes, He has got, because He says. You cannot say that there is no higher nature and lower nature. There is also higher nature. Now, here the Lord says that "When I come as incarnation, when I appear . . ." Prakṛtiṁ svām adhiṣṭhāya. Svām means His higher nature. He does not accept this material nature. He does not accept this material nature.