In this material segment there are millions and billions of universes with trillions of planets and suns, stars and moons. But this whole material creation is only a fragment of the total creation. Most of the creation is in the spiritual sky. One who desires to merge into the existence of the Supreme Brahman is at once transferred to the brahmajyoti of the Supreme Lord and thus attains the spiritual sky. The devotee, who wants to enjoy the association of the Lord, enters into the Vaikuṇṭha planets, which are innumerable, and the Supreme Lord by His plenary expansions as Nārāyaṇa with four hands and with different names like Pradyumna, Aniruddha and Govinda associates with him there. Therefore at the end of life the transcendentalists think either of the brahmajyoti, the Paramātmā or Supreme Personality of Godhead Śrī Kṛṣṇa. In all cases they enter into the spiritual sky, but only the devotee, or he who is in personal touch with the Supreme Lord, enters into the Vaikuṇṭha planets or the Goloka Vṛndāvana planet. The Lord further adds that of this "there is no doubt." This must be believed firmly. We should not reject that which does not tally with our imagination; our attitude should be that of Arjuna: "I believe everything that You have said." Therefore when the Lord says that at the time of death whoever thinks of Him as Brahman or Paramātmā or as the Personality of Godhead certainly enters into the spiritual sky, there is no doubt about it. There is no question of disbelieving it.
The Bhagavad-gītā (8.6) also explains the general principle that makes it possible to enter the spiritual kingdom simply by thinking of the Supreme at the time of death:
- yaṁ yaṁ vāpi smaran bhāvaṁ
- tyajaty ante kalevaram
- taṁ tam evaiti kaunteya
- sadā tad-bhāva-bhāvitaḥ
"Whatever state of being one remembers when he quits his present body, in his next life he will attain to that state without fail." Now, first we must understand that material nature is a display of one of the energies of the Supreme Lord.