The gods had condemned Sisyphus to ceaselessly rolling a rock to the top of a mountain, whence the stone would fall back of its own weight. They had thought with some reason that there is no more dreadful punishment than futile and hopeless labor.
Opinions differ as to the reasons why he became the futile laborer of the underworld. To begin with, he is accused of a certain levity in regard to the gods. He stole their secrets.
Homer tells us also that Sisyphus had put Death in chains. Pluto could not endure the sight of his deserted, silent empire. He dispatched the god of war, who liberated Death from the hands of her conqueror.