This is the link to part 1 of an excellant documentary series by British theologian and Christian Robert Beckford. In it he goes on a quest which reveals every single Xtian belief has it's origins in pre-existing religions, from Krishna 3000 years before Jesus to Buddha, 400 years prior. The Jesus story does not have a single exclusive concept it can truly call it's own... don't take my word for it, watch a Xtian academic explain it all.