And immediately Paul began preaching about Jesus in the synagogues, saying, "He is indeed the Son of God!" All who heard him were amazed. "Isn't this the same man who persecuted Jesus' followers with such devastation in Jerusalem?" They asked. "And we understand that he came here to arrest them and take them in chains to the leading priests."
Saul's preaching became more and more powerful, and the Jews in Damascus couldn't refute his proofs that Jesus was indeed the Messiah. After a while the Jewish leaders decided to kill him. - Acts 9.20-23
Saul just murdered Stephen and made him the first Christian martyr. In Damascus, he almost made himself the second martyr. The Jews had good reason for silencing Paul. His brilliance could not be matched. His proof of Jesus as messiah through scripture was unassailable. After all, he was the star disciple of Gamaliel. If Paul was not knocked off his horse by Christ, we would still have know him today as the greatest Jewish Rabbi. What he did for Christian theology, he would have done for Jewish theology. All philosophies, it is said, are mere commentaries on Plato and Aristotle. Perhaps, it is truer to say all Christian theologies are commentaries on Paul.
But the hasty murder plot of the Jews did not stem simply from their shame of being beat in an argument. More pressingly, Paul himself was the irrefutable proof of the resurrection of Christ. He had killed a leader of the Way and came down with papers to physically assail anyone affiliated with the WAY. But now he is shouting at the market square, “Jesus is the Son of God!” This wasn’t a change of allegiance, done my many for selfish reasons. This was a sudden change of world view. Only something dramatic causes such immediate shift. So what did Paul experience that changed him so completely and suddenly?
Paul knows the burning question so he tells them what happened to him, he heard the voice of Jesus. He is sure because the voice behind the blinding light identified himself as Jesus and identified himself with the community he was persecuting. Paul did not reason himself to Jesus. Jesus revealed himself to Paul. Now Paul had no choice but to rebuild his whole understandings from that cornerstone. This supernatural explanation is the only rational explanation for Paul’s utter transformation. The Jews could not mount any counterargument against that. So they do the only solution left, kill him. Jews in Jerusalem tried to kill Lazarus and bury the evidence of Jesus’ unheard of miracle of reviving a man dead for 4 days. The Jews in Damascus is led to that same action for Paul was the walking proof that Christ rose from the dead.
Paul’s life proves the resurrection as much as the current unity of the 50 states is proof that the Union won the Civil War. Any other alternative story is nonsense. That Jesus’ resurrection was a scam or a hysteria doesn’t take history serious enough.