Pūrṇasya pūrṇam ādāya pūrṇam evāvaśiṣyate (Īśo Invocation). That is Kṛṣṇa. Kṛṣṇa is expanding Himself just like the heat and light, but that does not mean Kṛṣṇa is finished. It is not material. Pūrṇasya pūrṇam ādāya pūrṇam evāvaśiṣyate. Kṛṣṇa is spread in so many ways by His energy, by His personal expansion. Advaitam acyutam anādir ananta-rūpam ādyaṁ purāṇa-puruṣaṁ nava-yauvanaṁ ca (Bs. 5.33). He is not finished. This is material idea, that "If Brahman is spread everywhere, then where is the existence of Brahman in one place?" This is the Māyāvādī idea.
Just like you take a big paper, a newspaper, and tear it into pieces and throw all over, the original newspaper is finished. But Kṛṣṇa is not like that, that because Kṛṣṇa has spread by His energies, prakṛti—energy means prakṛti—that does not mean Kṛṣṇa is finished. This is Māyāvāda philosophy, that when Brahman, the Supreme, is distributed everywhere, the original form, or the fact, is finished. No. That is not the fact. The Īśopaniṣad, it is said that He is so perfect and complete, even complete is taken away from complete, it is still complete. That is Brahman.