Strange things were told of Tiresias, who was blind, and who had already lived three times as long as any ordinary man. It was said that when he was a boy two enchanted snakes turned him into a woman, and that a year later they made him a man again. And that once, when Zeus and Hera had an argument, Hera saying that Zeus had a much better time than she did, they had consulted Tiresias, who replied that it was nine times as pleasant to be a woman as to be a man.
Hera was furious at this, and struck Tiresias blind in that instant. Zeus could not undo what another Immortal had done, but he gave Tiresias the gift of prophecy and decreed that he should live for more than three generations.
In my humble opinion, Hera had no reason to be angry. I like, well, having a good time living.
anyways, thou shalt not kill messengers.