Christianity might have remained a small Messianic cult had it not been for the efforts of Saint Paul (A.D. ?3-64). As a youth, Paul was one of the Jewish authorities who fiercely suppressed this emerging sect. But the spiritual visions he had on the road to Damascus-dazzling lights, voices, sudden darkness-convinced him that he had seen and heard the risen Christ, and that Christ was the Messiah. The next thirty years of Saint Paul's life were spent traveling, teaching, writing letters, and unifying the many newly found Christian groups. Through his dynamic leadership the precepts of this new faith were shaped into a compelling and universal religion of salvation. Called "the second father of Christianity," Saint Paul is truly an epochal figure in history.
Source : Jonathan Star, The Inner Treasure