Associating with Kṛṣṇa
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president or prime minister, but in the spiritual sky everyone acknowledges the Supreme Personality of Godhead to be supreme. Those who do not acknowledge Him and attempt to rival Him are placed into the material universe, which is just like a prison house. As in any city there is a prison, and the prison forms a very insignificant part of the whole city, so the material universe is a prison for the conditioned souls. It forms an insignificant part of the spiritual sky, but it is not outside the spiritual sky, just as a prison is not outside of the city.
The inhabitants of the Vaikuṇṭha planets in the spiritual sky are all liberated souls. In  Śrīmad-Bhāgavatam  we are informed that their bodily features are exactly like God's. On some of these planets God is manifested with two arms, and on others He has four. The inhabitants of these planets, like the Supreme Lord, also manifest two and four arms, and it is said that one cannot distinguish between them and the Supreme Person. In the spiritual world there are five kinds of liberation.  Sāyujya-mukti  is a form of liberation in which one merges into the impersonal existence of the Supreme Lord, called Brahman. Another form of liberation is  sārupya-mukti , by which one receives features exactly like God's. Another is  sālokya-mukti , by which one can live in the same planet with God. By  sārṣṭi-mukti  one can have opulences similar to the Supreme Lord's. Another type enables one to remain always with God as one of His associates, just like Arjuna, who is always with Kṛṣṇa as His friend. One can have any of these five forms of liberation, but of the five the