When Indra understood that the sacrifice offered by the cowherd men in Vṛndāvana was stopped by Kṛṣṇa, he became angry, and he vented his anger upon the inhabitants of Vṛndāvana, who were headed by Nanda Mahārāja, although Indra knew perfectly well that Kṛṣṇa was personally protecting them. As the director of different kinds of clouds, Indra called for the sāṁvartaka. This cloud is invited when there is a need to devastate the whole cosmic manifestation. The sāṁvartaka was ordered by Indra to go over Vṛndāvana and inundate the whole area with an extensive flood. Demonically, Indra thought himself to be the all-powerful supreme personality. When demons become very powerful, they defy the supreme controller, Personality of Godhead. Indra, though not a demon, was puffed up by his material position, and he wanted to challenge the supreme controller. He thought himself, at least for the time being, as powerful as Kṛṣṇa. Indra said, "Just see the impudence of the inhabitants of Vṛndāvana! They are simply inhabitants of the forest, but being infatuated with their friend Kṛṣṇa, who is nothing but an ordinary human being, they have dared to defy the demigods."