This Krishna, the Lord of Absolute Love, the Seed and Soul of the Universe, comes down to this earth to serve and inspire men with His Love once in every Manwantara, once in every 71 Divine Cycles, that is, once in every 300,000,000 of our lunar years or more. Every Universe, of His countless Universes, likewise has its turn of being blessed by His visit as an Incarnation, once in a long period. This Universe of ours is the smallest of these Universes and its turn of Krishna's Incarnation comes off during the Junction Period of the Copper and Iron Ages of the 28th Divine Cycle of every Manwantara. This being the Iron Age of the 28th Divine Cycle of this Manwantara the Lord blessed this earth with His Personal Presence 5,000 years ago, His birth taking place within the appointed Junction Period. Avatārs that come to earth to save mankind and protect the good from the bad, the Srimād Bhāgavat says, are innumerable; they are either partial manifestations or aspects of Vishnoo, "but Krishna is Lord God (Bhagavan) Himself," the Supreme Deity of whom Vishnoo Himself is the Fourth Manifestation. Nobody knows exactly when Krishna will come, for even Brahmā, the operating creator, knows it not. Brahmā only sees him for a second once in a long while, flashing through his meditation like a lightning flash. When Krishna came this last time on earth with His Second Manifestation, Sankarsana (who was born as His Elder Brother, Balarām), the time was ripe for an incarnation of Vishnoo. But as the moon and stars are covered by the effulgence of the Sun, the Avatār of Vishnoo could not appear separately, so he was merged in Krishna—the part was swallowed by the whole. The story of the earthly career of Krishna, given in the Second Part of this book, is the story of the All-Love Krishna of Braja. This All-Love Krishna was the Krishna of Brindāban, also called Braja, the land where He played and roamed, where He went through His earthly career up to the age of eleven when He left Brindāban for Mathura. The Krishna of Brindāban is the Fullest Manifestation of Krishna, the Fullest Expression of His All-Love-Self. Hence the Krishna of Brindāban is called the Fullest Incarnation, which means All Krishna, the Krishna of All-Love. The Krishna of Mathura is called Fuller Krishna, which means three-quarters Krishna and one-quarter Vishnoo. And the Krishna of Dwārakā, half Krishna and half Vishnoo, is called Full Incarnation of Krishna. Krishna being All Love, He knows nothing but Love, gives and accepts nothing but Love, acts nothing but Love, breathes nothing but Love, speaks nothing but Love.