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 one may 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 Mahārāja 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.