Not to undermine Christianity, but it would seem Paul, and the gospel writers, drew on many sources and orientations beyond just those of Jesus' end...which incidentally, Paul never seems to have given a hoot about when he later visited Jerusalem. One would think he'd want to visit the site of the Crucifiction, and Jesus' tomb, etc. But alas....
Smart guy, Paul, both before and after his "conversion". Though I don't think I'd have related to him.
Though all in God, who's Goodness I do believe in.
Why to you put me on the wild goose chase, instead of specifying your claims?
Anyway I looked at this page, does this quote below agrees with your views?
"In his books The Mythmaker and Paul and Hellenism, Talmudic scholar Hyam Maccoby exposed a theory that Paul was actually a Gentile raised in an environment influenced by the popular Hellenistic mystery religions centered on dying and resurrected savior deities [...] Maccoby believes that Paul's revelation was thus actually a resolution of his divided self; Paul subsequently fused the mystery religions, Judaism and the Passion of Jesus into an entirely new belief, centered on the death of Jesus as a mystical atoning sacrifice."
I can understand why the Talmudic scholar would want to believe this "theory". Is it what you believe?