Rhètra

The Great Rhetra, in essence, was the constitution of Sparta, the political document that outlined the powers and structures of government. According to tradition, the Great Rhetra was given to the legendary figure Lycurgus by the mythical Oracle of Apollo at Delphi. The Oracle was a priestess of Apollo who prophesied on behalf of the gods so when Lycurgus took his ideas of government to her, he was looking for divine approval. Apparently, he got it.