Although the entire cosmic manifestation is nondifferent, the material world is nonetheless different from the spiritual world. Only by the mercy of the Supreme Lord can one understand how the wonderful material nature acts. For example, although Lord Brahmā appeared from the lotus seat that had grown from the abdomen of Garbhodakaśāyī Viṣṇu, he could not understand what to do after his appearance. He was attacked by two demons, Madhu and Kaiṭabha, who took away Vedic knowledge, but the Lord killed them and entrusted to Lord Brahmā the Vedic knowledge. Thus the Lord appears in every millennium in the societies of demigods, human beings, animals, saints and aquatics. All such incarnations are meant to protect the devotees and kill the demons, but this killing and protecting does not reflect any sense of partiality on the part of the Supreme Lord. The conditioned soul is always attracted by the external energy. Therefore he is subjected to lust and greed, and he suffers under the conditions of material nature. The Lord’s causeless mercy toward His devotee is the only means by which to get out of material existence. Anyone engaged in glorifying the Lord’s activities is always unafraid of this material world, whereas one who cannot glorify the Lord in that way is subjected to all lamentation.