Mithraism emerged in ancient Persia in the 15th century BC, designed specifically for the strongest men, who had to undergo twelve brutal trials to join. Those who qualified became followers at different levels, symbolizing the ascension of the soul. By the 2nd century AD, this faith spread throughout the Roman Empire, attracting soldiers, sailors, merchants, and slaves alike. Mithraism promoted discipline, bravery, and self-sacrifice, contributing to the Roman army's repeated victories. However, with the rise of Christianity, Mithraism faced challenges. By the 4th century, Christianity became the state religion, leading to the gradual decline and eventual extinction of Mithraism.