The Abduction of Helen

Euripides: Helen
Helen sets the scene at the start of the play

Now let me tell you of my misfortunes....
Hera, baulked of her victory over the other goddesses, in her resentment turned the substance of Aphrodite's promise into air. She gave the royal son of Priam for his bride - not me, but a living image compounded of the ether in my likeness. Paris believes that he possesses me: what he holds is nothing but an airy delusion.

And Zeus by his subsequent arrangements has added to my misfortune. He brought war upon Hellaas and the unhappy Phyrygians, to ease the swarming earth of her measureless burden of men and make Achilles famous among the fighters of Greece. The Helen who went to Phrygia as a prize for Troy to defend and the Greeks to fight for - that Helen was not I, only my name.
Zeus did not forget me: I was taken by Hermes, wrapped in a cloud, borne through the secret place of the upper air, and set down here in the palace of Proteus [in Egypt] whom Zeus picked out as the most honourable of all men, so that I might preserve my chastity inviolate for Menelaus.