"the priests of Cybele do not so rattle their sounding brass"

Cybele, with her characteristic lions
Public DomainCybele, with her characteristic lions - Credit: 1894 sketch of a Hellenistic statue from 3 AD
Cybele originated as an Anatolian mother goddess, associated with mountains, hawks and lions. She was adopted by the Greeks in about 6 BC, and the Romans in about 2 BC.  She’s generally portrayed as a foreign, exotic mystery-goddess, who arrives in a lion-drawn chariot accompanied by wild music, wine, and ecstatic followers. 

Statue of a Galli priest, 2AD
Public DomainStatue of a Galli priest, 2AD - Credit: Anna-Katharina Rieger
Her consort was Attis, an eunuch shepherd.  Her priests were eunuchs, known as Galli.  The Galli castrated themselves during an ecstatic celebration called the "Day of Blood", which took place once a year.  For the event, they would wear women's clothes, turbans, jewelry and heavy make-up. They begged for charity, and in return offered to tell fortunes.