Lord Brahmā, who has full control over the goddess of learning and who is considered to be the best authority in Vedic knowledge, was thus perplexed, being unable to understand the extraordinary power manifested by the Supreme Personality of Godhead. In the mundane world, even a personality like Brahmā is unable to understand the mystic power of the Supreme Lord. Not only did Brahmā fail to understand, but he was perplexed even to see the display which was being manifested by Kṛṣṇa before him.
Kṛṣṇa took compassion upon Brahmā because of his inability to see how Kṛṣṇa was displaying the forms of Viṣṇu and transforming Himself into calves and cowherd boys, and thus, while fully manifesting the Viṣṇu expansions, He suddenly pulled His curtain of yogamāyā over the scene. In the Bhagavad-gītā it is said that the Supreme Personality of Godhead is not visible due to the curtain spread by yogamāyā. That which covers the reality is mahā-māyā, or the external energy, which does not allow a conditioned soul to understand the Supreme Personality of Godhead beyond the cosmic manifestation. But the energy which partially manifests the Supreme Personality of Godhead and partially does not allow one to see is called yogamāyā. Brahmā is not an ordinary conditioned soul. He is far, far superior to all the other demigods, and yet he could not comprehend the display of the Supreme Personality of Godhead; therefore Kṛṣṇa willingly stopped manifesting any further potency. The conditioned soul not only becomes bewildered but is completely unable to understand. The curtain of yogamāyā was drawn so that Brahmā would not become more and more perplexed.
When Brahmā was relieved from his perplexity, he appeared to awaken from an almost dead state, and he began to open his eyes with great difficulty. Thus he could see the external cosmic manifestation with common eyes. He saw all around him the superexcellent view of Vṛndāvana—full with trees—which is the source of life for all living entities. He could appreciate the transcendental land of Vṛndāvana, where all the living entities are transcendental to ordinary nature. In the forest of Vṛndāvana, even ferocious animals like tigers live peacefully along with the deer and human beings. He could understand that because of the presence of the Supreme Personality of Godhead, Vṛndāvana is transcendental to all other places and is free of lust and greed.