Biblical Magi religion was Zoroastrianism, with its priestly magos class. Although Matthew's account does not explicitly cite the motivation for their journey (other than seeing the star in the east, which they took to be the star of the King of the Jews), the Syriac Infancy Gospel provides some clarity by stating explicitly in the third chapter that they were pursuing a prophecy from their prophet, Zoradascht (Zoroaster). There is an Armenian tradition identifying the "Magi of Bethlehem" as Balthasar of Arabia, Melchior of Persia, and Gaspar of India. Historian John of Hildesheim relates a tradition in the ancient silk road city
Frederick I, Holy Roman Emperor relics of the "Biblical Magi" (the Wise Men or Three Kings) from the Basilica di Sant'Eustorgio in Milan and gave them as a gift (or as loot) to the Archbishop of Cologne, Rainald of Dassel. The relics had great religious significance and could be counted upon to draw pilgrims from all over Christendom. Today they are kept in the Shrine of the Three Kings in the Cologne cathedral. After the death of the antipope Victor IV, Frederick supported antipope Paschal III, but he was soon driven from Rome, leading to the return of Pope Alexander III in 1165. In the