Shrimad Bhagavad Gita As It Is -Shri Shrimad A.C Bhaktivedanta Swami Prabhupada
Chapter 4: Verse-7
yadä yadä hi dharmasya
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.
The word srjämi is significant herein. Srjämi cannot be used in the sense of creation, because, according to the previous verse, there is no creation of the Lord’s form or body, since all of the forms are eternally existent. Therefore, srjämi means that the Lord manifests Himself as He is. Although the Lord appears on schedule, namely at the end of the Dväpara-yuga of the twenty-eighth millennium of the seventh Manu in one day of Brahmä, He has no obligation to adhere to such rules and regulations, because He is completely free to act in many ways at His will. He therefore appears by His own will whenever there is a predominance of irreligiosity and a disappearance of true religion. Principles of religion are laid down in the Vedas, and any discrepancy in the matter of properly executing the rules of the Vedas makes one irreligious. In the Bhägavatam it is stated that such principles are the laws of the Lord. Only the Lord can manufacture a system of religion. The Vedas are also accepted as originally spoken by the Lord Himself to Brahmä, from within his heart. Therefore, the principles of dharma, or religion, are the direct orders of the Supreme Personality of Godhead (dharmam tu säksäd bhagavat-pranitam)
- yadä yadä=whenever and wherever; hi=certainly; dharmasya=of religion; glänih=discrepancies; bhavati—become manifested; bhärata—O descendant of Bharata; abhyutthänam=predominance; adharmasya=of irreligion; tadä=at that time; ätmänam=self; srjämi=manifest; a ham=I.