The following is a lecture on the Srimad-Bhagavatam 1.5.12-13. Recorded June 11, 1969, New Vrndavana. There is a link at bottom of post, if you want to hear the audio.
Śrīmad-Bhāgavatam Lecture 1.5.12-13
By Hiws Divine Grace A. C. Bhaktivedanta Swami Prabhupada