The Supreme Lord and His surrendered servitors have in various ways clarified and transmitted the knowledge of the Supreme Absolute, but those who offend the Supreme Lord and His devotees can never comprehend such topics. As Śrī Prahlāda Mahārāja says in the Śrīmad-Bhāgavatam (7.5.30-31),
- matir na kṛṣṇe parataḥ svato vā
- mitho 'bhipadyeta gṛha-vratānām
- adānta-gobhir viśatāṁ tamisraṁ
- punaḥ punaś carvita-carvaṇānām
- na te viduḥ svārtha-gatiṁ hi viṣṇuṁ
- durāśayā ye bahir-artha-māninaḥ
- andhā yathāndhair upanīyamānās
- te 'pīśa-tantryām uru-dāmni baddhāḥ
Because of their uncontrolled senses, persons too addicted to materialistic life make progress toward hellish conditions and repeatedly chew that which has already been chewed. Their inclinations toward Kṛṣṇa are never aroused, either by the instructions of others, by their own efforts, or by a combination of both. Persons who are strongly entrapped by the consciousness of enjoying material life, and who have therefore accepted as their leader or guru a similar blind man attached to external sense objects, cannot understand that the goal of life is to return home, back to Godhead, and engage in the service of Lord Viṣṇu. As blind men guided by another blind man miss the right path and fall into a ditch, materially attached men led by another materially attached man are bound by the ropes of fruitive labor, which are made of very strong cords, and they continue again and again in materialistic life, suffering the threefold miseries.