I found a very interesting article on Time’s website. The article talks about a tablet that has been found which talks about the rising of a messiah after three days in the grave.
A 3-ft.-high tablet romantically dubbed “Gabriel’s Revelation” could challenge the uniqueness of the idea of the Christian Resurrection. The tablet appears to date authentically to the years just before the birth of Jesus and yet — at least according to one Israeli scholar — it announces the raising of a messiah after three days in the grave. If true, this could mean that Jesus’ followers had access to a well-established paradigm when they decreed that Christ himself rose on the third day — and it might even hint that they they could have applied it in their grief after their master was crucified. Keep reading at Time.com
Of course, if you know your history, or have seen the movie Zeitgeist, you’d know that the Christians took a lot of mythology from past religions and deities, including being born upon a virgin, the date of Jesus’ birth, the miracles he could perform, etc. If you’ve not watched the video, go watch it now.