Mithraism, also known as the Mithraic mysteries or the Cult of Mithras, was a Roman mystery religion focused on the god Mithras. Although inspired by Iranian worship of the Zoroastrian divinity (yazata) Mithra, the Roman Mithras was linked to a new and distinctive imagery, and the degree of continuity between Persian and Greco-Roman practice remains debatable. The mysteries were popular among the Imperial Roman army from the 1st to the 4th century AD.