Krishna's Promise to Return

Bhagavad Gita four, verses seven and eight, contains Krishna's own statement of the avatar doctrine, among the most quoted verses in the entire text. Krishna declares that whenever righteousness, dharma, declines and unrighteousness rises, he sends himself forth, taking birth age after age for the protection of the good, the destruction of evildoers, and the establishment of dharma. The verses present divine descent not as a single unrepeatable event but as a recurring pattern triggered by moral crisis, occurring whenever the balance between dharma and its opposite tips too far, rather than on any fixed schedule. Spoken within the Gita's own frame as Krishna's direct address to Arjuna on the battlefield, the passage also functions as a claim about the speaker's own nature, since Krishna is explaining why he, as the supreme deity, can appear within history as a particular human figure without ceasing to be what he fundamentally is, a question the following verses of the same chapter continue to address in greater philosophical detail than these two alone provide, since the Gita goes on to describe Krishna's births as unlike ordinary birth precisely because his own nature remains unchanged and undiminished by each descent.