A discourse of Swami Vivekananda on Mahabharata :
(Delivered at the Shakespeare Club, Pasadena, California, February 1, 1900)
The central figure of the Gita is Krishna. As you worship Jesus of Nazareth as God come down as man so the Hindus worship many Incarnations of God. They believe in not one or two only, but in many, who have come down from time to time, according to the needs of the world, for the preservation of Dharma and destruction of wickedness. Each sect has one, and Krishna is one of them. Krishna, perhaps, has a larger number of followers in India than any other Incarnation of God. His followers hold that he was the most perfect of those Incarnations. Why? "Because," they say, "look at Buddha and other Incarnations: they were only monks, and they had no sympathy for married people. How could they have? But look at Krishna: he was great as a son, as a king, as a father, and all through his life he practiced the marvellous teachings which he preached." "He who in the midst of the greatest activity finds the sweetest peace, and in the midst of the greatest calmness is most active, he has known the secret of life." Krishna shows the way how to do this — by being non-attached: do everything but do not get identified with anything. You are the soul, the pure, the free, all the time; you are the Witness. Our misery comes, not from work, but by our getting attached to something. Take for instance, money: money is a great thing to have, earn it, says Krishna; struggle hard to get money, but don't get attached to it. So with children, with wife, husband, relatives, fame, everything; you have no need to shun them, only don't get attached. There is only one attachment and that belongs to the Lord, and to none other. Work for them, love them, do good to them, sacrifice a hundred lives, if need be, for them, but never be attached. His own life was the exact exemplification of that.
Remember that the book which delineates the life of Krishna is several thousand years old, and some parts of his life are very similar to those of Jesus of Nazareth. Krishna was of royal birth; there was a tyrant king, called Kamsa, and there was a prophecy that one would be born of such and such a family, who would be king. So Kamsa ordered all the male children to be massacred. The father and mother of Krishna were cast by King Kamsa into prison, where the child was born. A light suddenly shone in the prison and the child spoke saying, "I am the Light of the world, born for the good of the world." You find Krishna again symbolically represented with cows — "The Great Cowherd," as he is called. Sages affirmed that God Himself was born, and they went to pay him homage. In other parts of the story, the similarity between the two does not continue.
Shri Krishna conquered this tyrant Kamsa, but he never thought of accepting or occupying the throne himself. He had nothing to do with that. He had done his duty and there it ended.