Medusa is a beautiful priestess in the temple of Athena. After she makes a vow of chastity, Poseidon lusts after her. He then proceeds to rape her. Athena gets angry and turns Medusa's hair into snakes. She also makes Medusa's gaze turn any man into stone.
The temple of Athena
I shall make a vow of chastity in order to honor the great goddess Athena.