The great ṛṣis approached Dhruva Mahārāja at a time when his mind was very perplexed due to the magical feats exhibited by the Yakṣas. A devotee is always protected by the Supreme Personality of Godhead. By His inspiration only, the sages came to encourage Dhruva Mahārāja and assure him that there was no danger because he was a soul fully surrendered to the Supreme Lord. By the grace of the Lord, if a devotee, at the time of death, can simply chant His holy name—Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare—simply by chanting this mahā-mantra, he immediately surpasses the great ocean of the material sky and enters the spiritual sky. He never has to come back for repetition of birth and death. Simply by chanting the holy name of the Lord, one can surpass the ocean of death, so Dhruva Mahārāja was certainly able to surpass the illusory magical feats of the Yakṣas, which for the time being disturbed his mind.
(Srimad Bhagavatam------4:10:30------purport).

Since the Supreme Lord is all-powerful, He can do things that seem wonderful for a common man. Similarly, a devotee who has taken shelter at the lotus feet of the Lord can also do wonderful things unimaginable to a common man, by the grace of the dust of those lotus feet. Caitanya Mahāprabhu therefore teaches us to take shelter of the Lord's lotus feet:
ayi nanda-tanuja kiṅkaraṁ
patitaṁ māṁ viṣame bhavāṁbudhau
kṛpayā tava pāda-paṅkaja-
sthita-dhūlī-sadṛśaṁ vicintaya
[Cc. Antya 20.32, Śikṣāṣṭaka 5]
"O son of Nanda Mahārāja, I am Your eternal servant, yet somehow or other I have fallen into the ocean of birth and death. Please pick me up from this ocean of death and place me as one of the atoms of Your lotus feet." Lord Caitanya teaches us to come in touch with the dust of the Lord's lotus feet, for then there will undoubtedly be all success.
(Srimad Bhagavatam------5:1:35------purport).

Śrīla Viśvanātha Cakravartī Ṭhākura has given us a very fine purport in this regard. Whenever one offers a prayer to the Supreme Personality of Godhead, one always requests some benediction from Him. Even pure (niṣkāma) devotees pray for some benediction, as instructed by Lord Śrī Caitanya Mahāprabhu in His Śikṣāṣṭaka:
ayi nanda-tanuja kiṅkaraṁ
patitaṁ māṁ viṣame bhavāmbudhau
kṛpayā tava pāda-paṅkaja-
sthita-dhūlī-sadṛśaṁ vicintaya
[Cc. Antya 20.32, Śikṣāṣṭaka 5]
"O son of Mahārāja Nanda [Kṛṣṇa], I am Your eternal servitor, yet somehow or other I have fallen into the ocean of birth and death. Please pick Me up from the ocean of death and place Me as one of the atoms at Your lotus feet."
(Srimad Bhagavatam------5:18:9------purport).

"O son of Mahārāja Nanda [Kṛṣṇa], I am Your eternal servitor, yet somehow or other I have fallen into the ocean of birth and death. Please pick me up from thisocean of death and place me as one of the atoms at Your lotus feet." Being pleased with the devotee, the Lord turns all his material impediments into spiritual service.
(Srimad Bhagavatam------6:4:27-28------purport).