More that 400 years before Christ, there was a man in the cradle of Western Civilization that was preaching the doctrine of Christ and Spiritism. It was Socrates in Athens.
Allan Kardec in the book, The Gospel According to Spiritism, lays out the philosophy of Socrates as recorded by Plato. The basic doctrine of Socrates is very similar to what Jesus preached and Spiritism codified. Which should not be surprising, since all had their headwaters in the same place; the spirit world. Read More.