A class on Bhagavad Gita 4.7 given by His Divine Grace A.C. Bhaktivedanta Swami Prabhupada on March 27, 1974 in Mumbai, India.
Bhagavad Gita 4.7
yadā yadā hi dharmasya
glānir bhavati bhārata
abhyutthānam adharmasya
tadātmānaṁ sṛjāmy aham
Whenever and wherever there is a decline in religious practice, O descendant of Bharata, and a predominant rise of irreligion – at that time I descend Myself.