The instructions of Lord Kapila to His mother Devahūti are fully described in the Third Canto (Chapters 25-32) of the Śrīmad-Bhāgavatam, and anyone who follows the instructions can achieve the same liberation obtained by Devahūti. The Lord spoke Bhagavad-gītā, and thereby Arjuna achieved self-realization, and even today anyone who follows the path of Arjuna can also attain the same benefit as Śrī Arjuna. The scriptures are meant for this purpose. Foolish, unintelligent persons make their own interpretations by imagination and thus mislead their followers, causing them to remain in the dungeon of material existence. However, simply by following the instructions imparted by Lord Kṛṣṇa or Lord Kapila, one can obtain the highest benefit, even today.
The word ātma-gatim is significant in the sense of perfect knowledge of the Supreme. One should not be satisfied simply by knowing the qualitative equality of the Lord and the living being. One should know the Lord as much as can be known by our limited knowledge. It is impossible for the Lord to be known perfectly as He is, even by such liberated persons as Śiva or Brahmā, so what to speak of other demigods or men in this world. Still, by following the principles of the great devotees and the instructions available in the scriptures, one can know to a considerable extent the features of the Lord. His Lordship Kapila, the incarnation of the Lord, instructed His mother fully about the personal form of the Lord, and thereby she realized the personal form of the Lord and was able to achieve a place in the Vaikuṇṭhaloka where Lord Kapila predominates. Every incarnation of the Lord has His own abode in the spiritual sky. Therefore Lord Kapila also has His separate Vaikuṇṭha planet. The spiritual sky is not void. There are innumerable Vaikuṇṭha planets, and in each of them the Lord, by His innumerable expansions, predominates, and the pure devotees who are there also live in the same style as the Lord and His eternal associates.
When the Lord descends personally or by His personal plenary expansions, such incarnations are called aṁśa, kalā, guṇa, yuga and manvantara incarnations, and when the Lord's associates descend by the order of the Lord, such incarnations are called śaktyāveśa incarnations. But in all cases all the incarnations are supported by the invulnerable statements of the authorized scriptures, and not by any imagination of some self-interested propagandist. Such incarnations of the Lord, in either of the above categories, always declare the Supreme Personality of Godhead to be the ultimate truth. The impersonal conception of the supreme truth is just a process of negation of the form of the Lord from the mundane conception of the supreme truth.