The worship of the apostles St. Peter and St. Paul, considered to be the champions of the Christian Church, spread to Sicily with the advent of the Normans, during the process of Latinisation and Christianisation of the island.
Saul, later Paul, was a persecutor of Christians who, after his conversion, began to preach the Gospel, leaving a very important testimony: the Letters. In the mosaic cycle dedicated to him inside the Cathedral, the scene of his conversion on the road to Damascus is of greater importance.
