[Interested]

Christianity has mopped this up, Christianizing a lot of paganism. Festivals based on the zodiac have been Christianized, including Christmas, Easter, Candlemas (which is known in America as Groundhog Day), All Saints Day (which has given way to Halloween), et cetera. Local deities have been replaced by the names of early Christians, but their worship continues as the veneration of saints. Christianity has struggled to reaffirm the basic monotheism of Judaism while deifying a human being: Jesus of Nazareth. For most Christians, the culmination of this effort has been the doctrine of the Trinity, whereby God becomes one god, but in three forms. When he's in Heaven, he's God; when on earth, he's Jesus; when he dwells in your heart, he's the Holy Ghost.

This is somewhat misleading. Orthodox Christianity states that the Trinity is God. This does not mean that Christianity has struggled to be monotheistic like Judaism. It is monotheistic. If God can be omnipresent and omniscient and omnipotent, then why not one literal God in three persons. There is no struggle to put this into an Orthodox perspective if you think closely enough.