The document discusses the rise of Athena as the protector of Athens over Poseidon after Cecrops, the first king of Attica, chose Athena due to her gift of the olive tree. It then discusses the myths surrounding Cecrops' aunts Procne and Philomela and how they took revenge on King Tereus by killing and serving their son Itys to Tereus, after which the gods turned them into birds as punishment. The myths help explain how Athena came to be the patron goddess and protector of Athens despite Poseidon's attempts.