The Mysteries of Mithra is a chapter from a book exploring the history and spread of Mithraism, an ancient Persian religion, throughout the Roman Empire. The text analyzes the origins and evolution of Mithraic beliefs, liturgy, and practices, tracing its journey from Persia to Asia Minor and ultimately to the Roman heartland. It examines how Mithraism intertwined with local beliefs and customs, as well as how it influenced, and was influenced by, the dominant religions and philosophies of the time. Furthermore, the text analyzes the role of the Roman army, merchants, and slaves in spreading Mithraism across the vast empire. Finally, the author explores the political and religious significance of Mithraism within the context of Roman society, highlighting the religion's role in supporting imperial authority and its close ties to the worship of the Sun.