Lord Krishna entered in his subtle form in the womb and saved the baby
in the womb. This baby was Parikshit, who became the listener of
Srimad Bhagavatam. He received darshan (Divine vision) of Lord in the
womb itself.
In all the Vedic scriptures, the position accorded to the Srimad Bhagavatam Mahapuran or the Bhagwat Katha is exceptional. The Vedas are of course, the highest authority. However, Srimad Bhagavatam Mahapuran is like the essence of the Vedic teachings, written by Ved Vyas himself. Knowledge of Vedas and Upanishads is presented in such a blissful manner, with all the Divine pastimes of God and His devotees, that listening to the Bhagwat Katha becomes an experience in itself. Not only does it illuminate our intellect with Divine wisdom, it also moves our heart and fills it with the nectar of Divine love. That is why it is said that this Srimad Bhagavatam or Bhagwat Katha has something that even the Vedas do not have.