Paul was supposedly born and raised in the city of Tarsus, a region in SE Asia-Minor (now called Turkey) where Mithras was well known. Biblical scholars are now saying that Paul, the alleged author of 13 out of the 27 (maybe more) books of the New Testament, may have been influenced in his writings by this strong religion of Mithraism. We can see a profound kinship between Mithraism and Christianity. In my mind, there are two Jesus' teachings. Jesus the Jew and Jesus the Gentile, which by the way is really Paul's Jesus. And guess which one Christians follow? The ex-pagan Constantine liked Paul's Jesus over Jesus the Jew. Jesus and all the others upon whom this character is predicated are personifications of the sun, and the Gospel fable is merely a rehash of a mythological formula revolving around the movements of the sun through the heavens. “There is strong reason to believe that St. Paul fabricated the belief system of Christianity from Zoroastrian mythology. In order to hide Paul’s plaigerism… Christians burned the library of Alexandria in 390 A.D. Books in that library kept Mithra’s original story of what Pauline Doctrine is an almost exact copy. (George Sarton , Introduction to History of Sciences)
Hope this helps you. ;-)