Lord Krishna says in th Bhagavad gita, "Whenever Dharma is at its lowest ebb I come into this world from Age to Age to reestablish it, to eliminate the wicked and protect the holy and pious." A mirror has the capacity to shine, it has the capacity to reflect. It reflects the light of the sun but this capacity deminishes if there is dust on ti. When the dust settles completely on the mirror, then the mirror will not evern be visible. When the dust is cleaned it shines again. It has the capacity to show you your face. You can see your face only in a clean mirror. In exactly the same way Lord Krishna says, "In each Age, when this Spiritual Knowledge becomes almost dormant I incarnate to revive it."
