Srila Param Gurudev is explaining the advent of the Lord Narsimha Deva from the seventh canto of Srimad Bhagavatam. He goes by describing the conversation between Prahlad Maharaj and Hiranyakashipu while emphasizing the behavior of a Vaishnava when compared to a non-devotee. Further, he explains how the Lord descends to keep the words of His devotees.