Paul the Apostle
Paul's name was originally Saul (not to be confused with King Saul from the books of Samuel in the Old Testament). He grew up learning both the Jewish law and the Greek ways of discussing things. We are first introduced to Saul in the Bible near the end of Acts 7. The Christian movement had begun with the resurrection and ascension of Jesus. Saul was strongly against this, and he was happy as he watched Saint Stephen, the first martyr of Jesus, being killed by stoning after giving a speech that made the Jewish court angry.  He worked for the Roman Government and helped lead the arrests and killing of many Christians in Israel and the nearby area.