Paul (or Saul, as he was also known) was a zealot, a staunch defender of the Jewish faith. He was especially zealous about exposing and punishing offshoots of Judaism that threatened to obscure its message.

He targeted the disciple of a rabbi named Jesus of Nazareth who were attempting to keep his message alive even after the rabbi himself had been crucified. They spread stories about seeing him risen form the dead. They claimed he was the Son of God and the way to everlasting life.