This is to be understood, bhaktyā. Because without bhakti, there is no admission in the kingdom of God. That is not possible. That is stated in the Bhagavad-gītā:
- bhaktyā mām abhijānāti
- yāvān yaś cāsmi tattvataḥ
- tato māṁ tattvato jñātvā
- viśate tad-anantaram
- (BG 18.55)
Viśate means "enter." One is admitted in the spiritual world . . . paras tasmāt tu bhāvaḥ anyaḥ. There is spiritual world. There is another world. Paras tasmāt tu bhāvo 'nyo 'vyakto 'vyaktāt sanātanaḥ (BG 8.20). That sanātana-dhāma. That sanātana-dhāma you cannot enter without being a bhakta. Bhaktyā mām abhijānāti (BG 18.55). Those who enter that spiritual world, Brahman, nirviśeṣa-brahman, because they are lacking in bhakti, they again falls down.
That is stated in the Bhāgavat: āruhya kṛcchreṇa paraṁ padaṁ tataḥ patanty adhaḥ anādṛta-yuṣmad-aṅghrayaḥ. Ye 'nye 'ravindākṣa vimukta-māninas tvayy asta-bhāvād aviśuddha-buddhayaḥ (SB 10.2.32). There are certain persons, they are thinking, "Now I have become liberated." Ye nye 'ravindākṣa vimukta-māninaḥ. Vimukta-māninaḥ means "thinking that they have become liberated." But aviśuddha-buddhayaḥ, their intelligence is not yet clear. So what is the result? Suppose one realizes Brahman realization. He is not mukta? Yes, he is mukta. That's all right. But the intelligence is not yet purified. Why? Āruhya kṛcchreṇa paraṁ padaṁ tataḥ (SB 10.2.32). After undergoing severe austerities and penances, they rise up to the Brahmaloka, paraṁ padam. Patanty adhaḥ, again falls down. Again falls down. Why? Anādṛta-yuṣmad-aṅghrayaḥ. Just like the impersonal sky. You can go in the sky with your speedy airplane, but if you don't get a shelter in any planet, you will have to come again. Just like these moon planet–goers, going and coming. Why don't they stay there? So it is doubtful whether they are going.