King Parīkṣit was especially interested in hearing kṛṣṇa-kathā because he knew that his forefathers, particularly his grandfather, Arjuna, were victorious in the great Battle of Kurukṣetra only because of Kṛṣṇa. We may also take this material world as a Battlefield of Kurukṣetra. Everyone is struggling hard for existence on this battlefield, and at every step there is danger. According to Mahārāja Parīkṣit, the Battlefield of Kurukṣetra was just like a vast ocean full of dangerous animals. His grandfather Arjuna had to fight with such great heroes as Bhīṣma, Droṇa, Karṇa and many others who were not ordinary fighters. Such warriors have been compared to the timiṅgila fish in the ocean. The timiṅgila fish can very easily swallow up big whales. The great fighters on the Battlefield of Kurukṣetra could swallow many, many Arjunas very easily, but simply due to Kṛṣṇa's mercy, Arjuna was able to kill all of them. Just as one can cross with no exertion over the little bit of water contained in the hoofprint of a calf, so Arjuna, by the grace of Kṛṣṇa, was able to very easily jump over the ocean of the Battle of Kurukṣetra.
Mahārāja Parīkṣit very much appreciated Kṛṣṇa's activities for many other reasons. Not only was his grandfather saved by Kṛṣṇa, but he himself also was saved by Kṛṣṇa. By the end of the Battle of Kurukṣetra, all the members of the Kuru dynasty, both the sons and grandsons on the side of Dhṛtarāṣṭra and those on the side of the Pāṇḍavas, had died in the fighting. Except the five Pāṇḍava brothers, everyone died on the Battlefield of Kurukṣetra. Mahārāja Parīkṣit was at that time within the womb of his mother. His father, Abhimanyu, the son of Arjuna, also died on the Battlefield of Kurukṣetra, and so Mahārāja Parīkṣit was a posthumous child. When he was in the womb of his mother, a brahmāstra weapon was released by Aśvatthāmā to kill the child. When Parīkṣit Mahārāja's mother, Uttarā, approached Kṛṣṇa, Kṛṣṇa, seeing the danger of abortion, entered her womb as the Supersoul and saved Mahārāja Parīkṣit. Mahārāja Parīkṣit's other name is Viṣṇurāta because he was saved by Lord Viṣṇu Himself while still within the womb.