700 BC-Theogony

The Theogony (Greek: Θεογονία, Theogonía, Attic Greek: [tʰeoɡoníaː], i.e. "the genealogy or birth of the gods"^[1]) is a poem by Hesiod (8th – 7th century BC) describing the origins and genealogies of the Greek gods, composed c. 700 BC. It is written in the Epic dialect of Homeric Greek.

https://en.wikipedia.org/wiki/Theogony

http://www.sacred-texts.com/cla/hesiod/theogony.htm