Kamsa, the tyrannical king of Mathura, had imprisoned his own father to seize the throne and lived under the shadow of a prophecy declaring that the eighth child born to his sister Devaki and her husband Vasudeva would be the one to kill him. Rather than accept this fate, Kamsa imprisoned the couple and systematically murdered each of their children at birth – a campaign of infanticide that Krishna, the eighth child, escaped only because Vasudeva managed to smuggle the newborn out of the prison across a flooding Yamuna river and exchange him for a daughter of the cowherds Nanda and Yashoda in Gokul, raising Krishna in hiding far from Kamsa’s reach.
Assassins sent to a boy who wouldn’t die
Kamsa, learning eventually that a child had survived somewhere, spent years dispatching demons and assassins toward Vrindavan in an attempt to finish the job at a distance – Putana the poison-milk demoness, the whirlwind demon Trinavarta, the horse-demon Keshi, and others, each defeated by the growing Krishna with an ease that only deepened Kamsa’s dread of the prophecy’s inevitability.
An invitation that was actually a trap
Eventually, Kamsa devised a plan to lure Krishna and his brother Balarama directly into Mathura under the guise of a wrestling tournament and religious festival, intending to have them killed by his court’s strongest wrestlers, by a rampaging elephant named Kuvalayapida stationed at the arena entrance, or by any other means available if the wrestlers failed. Krishna and Balarama, aware of the danger but confident in their own strength by this point, accepted the invitation and traveled to Mathura anyway.
The arena Kamsa built for his own downfall
The brothers dispatched the elephant at the gate with ease, entered the arena, and defeated Kamsa’s champion wrestlers, Chanura and Mushtika, in full view of the assembled court – humiliations that stripped away any remaining illusion Kamsa held that hired strength could handle what he was actually facing. Kamsa, enraged and desperate, ordered Krishna’s parents and grandfather killed on the spot and moved to attack Krishna directly himself.
Krishna leapt onto the raised platform where Kamsa sat, dragged him down by the hair into the arena itself, and killed him in the ensuing struggle – fulfilling, at last, the prophecy Kamsa had spent an entire childhood’s worth of murder attempts trying to prevent.
A kingdom returned rather than seized
Rather than claim the throne of Mathura for himself, Krishna restored Kamsa’s imprisoned father, Ugrasena, to his rightful rule, and freed his own parents from the imprisonment they had endured throughout his childhood – closing the story not with personal conquest, but with the restoration of the legitimate order Kamsa’s tyranny had disrupted in the first place.