These principles of vaidhi-bhakti are also described in the Śrīmad-Bhāgavatam, Second Canto, 1st Chapter, verse 35, where Śukadeva Gosvāmī instructs the dying Mahārāj Parīkṣit as to his course of action. Mahārāj Parīkṣit met Śukadeva Gosvāmī just a week before his death, and the King was perplexed as to what should be done before he was to pass on. Many other sages also arrived there, but no one could give him the proper direction. Śukadeva Gosvāmī, however, gave this direction to him as follows: "My dear King, if you want to be fearless in meeting your death next week (for actually everyone is afraid at the point of death), then you must immediately begin the process of hearing and chanting and remembering God." If one can chant and hear Hare Kṛṣṇa and always remember Lord Kṛṣṇa, then he is sure to become fearless of death, which may come at any moment.
In the statements of Śukadeva Gosvāmī it is said that the Supreme Personality of Godhead is Kṛṣṇa. Therefore Śukadeva recommends that one should always hear about Kṛṣṇa. He does not recommend that one hear and chant about the demigods. The māyāvādīs (impersonalists) say that you can chant any name, either that of Kṛṣṇa or those of the demigods, and the result will be the same. But actually this is not a fact. According to the authorized version of Śrīmad-Bhāgavatam, one has to hear and chant about Lord Viṣṇu (Kṛṣṇa) only.
So Śukadeva Gosvāmī has recommended to Parīkṣit Mahārāj that in order to be fearless of death one has to hear and chant and remember the Supreme Personality of Godhead, Kṛṣṇa, by all means. He also mentions that the Supreme Personality of Godhead is sarvātmā. Sarvātmā means "the supersoul of everyone." Kṛṣṇa is also mentioned as īśvara, the supreme controller who is situated in everyone's heart. Therefore, if some way or other we become attached to Kṛṣṇa, He will make us free from all danger. In the Bhagavad-gītā it is said that anyone who becomes a devotee of the Lord is never vanquished. Others, however, are always vanquished. Vanquished means that after getting this human form of life, a person does not come out of the entanglement of birth and death and thus misses his golden opportunity. Such a person does not know where he is being thrown by the laws of nature.
Suppose one does not develop Kṛṣṇa consciousness in this human form of life. He will be thrown into the cycle of birth and death involving 8,400,000 species of life, and his spiritual identity will remain lost. One does not know whether he is going to be a plant, or a beast, or a bird, or something like that, because there are so many species of life. The recommendation of Rūpa Gosvāmī for reviving our original Kṛṣṇa consciousness is that somehow or other we should apply our minds to Kṛṣṇa very seriously and thus also become fearless of death. After death we do not know our destination, because we are completely under the control of the laws of nature. Only Kṛṣṇa, the Supreme Personality of Godhead, is controller over the laws of nature. Therefore, if we take shelter of Kṛṣṇa seriously, there will be no fear of being thrown back into the cycle of so many species of life. A sincere devotee will surely be transferred to the abode of Kṛṣṇa, as affirmed in the Bhagavad-gītā.
In the Padma Purāṇa also the same process is advised. There it is said that one should always remember Lord Viṣṇu. This is called dhyāna, or meditation—always remembering Kṛṣṇa. It is said that one has to meditate with his mind fixed upon Viṣṇu. Padma Purāṇa recommends that one always fix his mind on the form of Viṣṇu by meditation and not forget Him at any moment. And this state of consciousness is called samādhi, or trance.