Since I don't record the lecture, I'm not sure what happened but Chaturatma dasa's class starts at about 47:37 Listen to Chaturatma dasa class on text 1-4 of the Srimad-Bhagavatam (Bhagavata Purana), canto 12, chapter 4, entitled  "The Four Categories of Universal Annihilation" given on April 15, 2019 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..