The physical resurrection of Jesus Christ is the central tenet of Christianity. But the evidence for this extraordinary claim is nonexistent outside the Christian Bible, and contradictory within the Christian Bible.
In the earliest written Biblical reference, Paul says the risen Jesus appeared to more than five hundred people at one time [1 Cor 15:3-8]. Yet in the earliest written Gospel, called Mark, the allegedly risen Jesus does not appear to anybody. A different writer later added that part [16:9-20] to the Mark story, with the risen Jesus saying that people who believed in him could safely drink poison.
