Listen to a class given by Nandini Kishori devi dasi on text 21 of the Srimad-Bhagavatam (Bhagavata Purana), canto 2, chapter 3, entitled "Pure Devotional Service: The Change in Heart" given on July 8, 2022 at the Hare Krishna temple in Alachua, Florida. The Srimad-Bhagavatam is a sacred Vaishnava text from India that narrates the history of God (Krishna) and His devotees. It is translated with elaborate purports by His Divine Grace A.C. Bhaktivedanta Swami Prabhupada. Srimad-Bhagavatam is available for sale at Krishna.com
