BG 4.7

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.

4.7. For, whenever there is a decay of righteousness and the rise of unrighteousness, then, O descendant of Bharata, I send forth (or create) that is which the Self is unimportant.

4.7 Whenever spirituality decays and materialism is rampant, then, O Arjuna, I reincarnate Myself!

4.7 See Comment under 4.9

4.7 There is no restriction as to the time of My birth; whenever the Dharma taught by the Vedas that must be observed according to the arrangements of the four stations and the four stages of life declines, and Adharma, its opposite, increases, then I Myself, by My own will and in the manner stated, incarnate Myself. Sri Krsna gives the purpose of His birth.

4.7 O scion of the Bharata dynasty, yada yada hi, whenever; bhavati, there is; a glanih, decline, decrease; dharmasya, of virtue consisting of the duties of castes and stages of life of living beings, which are the means to achieving properity and Liberation; and abhyutthanam, increase, rise; adharmasya, of vice; tada, then; do aham, I; srjami, manifest; atmanam, Myself, through Maya. Why?

4.7 Whenever there is a decline of Dharma, O Arjuna, and uprising of Adharma, then I incarnate Myself.

4.7 O scion of the Bharata dynasty, whenever there is a decline one virtue and increase of vice, then do I manifest Myself.