A class on Srimad Bhagavatam 1.2.25 given by His Divine Grace A.C. Bhaktivedanta Swami Prabhupada on November 5, 1972 in Vrindavan, India.
A transcript of the class can be found here: https://goo.gl/nLG1Dg.
Srimad Bhagavatam 1.2.25
bhejire munayo ’thāgre
bhagavantam adhokṣajam
sattvaṁ viśuddhaṁ kṣemāya
kalpante ye ’nu tān iha
Previously all the great sages rendered service unto the Personality of Godhead due to His existence above the three modes of material nature. They worshiped Him to become free from material conditions and thus derive the ultimate benefit. Whoever follows such great authorities is also eligible for liberation from the material world.