from my research believe that mitherism was Persian religion taken to Rome by soldiers. Mithra was son of sun god ,(halo around his head ),dies every year (winter solstice) and is resurrected, used the eucherest , brought back the dead, holy day was Sunday. Sounds familiar? Only men allowed as it was for warriors. Temples in many Roman amphitheaters so Gladiators could pray . Temple underground station is by/on largest Mithra temple in London. You can see where Christianity got its ideas from.
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