98:5.1

The Phrygian and Egyptian mysteries eventually gave way before the greatest of all the mystery cults, the worship of Mithras. The Mithraic cult made its appeal to a wide range of human nature and gradually supplanted both of its predecessors. Mithraism spread over the Roman Empire through the propagandizing of Roman legions recruited in the Levant, where this religion was the vogue, for they carried this belief wherever they went. And this new religious ritual was a great improvement over the earlier mystery cults.