The windows in the nave, designed especially for the church by the English firm of Clayton and Bell, tell the story of St. Paul as taken from the Acts of the Apostles. Beginning with the window on Via Nazionale to the right of the west door, his story is told in due order around the whole church.
Window 1: Lower – The calling of Philip and Nathaniel; “Here is a man in whom there is no guile”
Window 1: Middle – Saul studying at the feet of Gamaliel
Window 1: Upper – St. Paul
Window 2: Lower – The stoning of Stephen
Window 2: Upper – Saul on the Road to Damascus
Trefoil: St. Peter
Window 3: Lower – The healing of Paul’s blindness
Window 3: Upper – The ordination of Paul to the Apostolate
Quatrefoil: St. Andrew
Window 4: Upper – Paul stoned and found by the disciples
Window 4: Lower – A priest of Zeus bringing oxen for sacrifice
Quatrefoil: St. James the Great
Window 5: Lower – Paul opposing Peter in Antioch
Window 5: Upper – Paul and Barnabus in discussions with the Apostles and elders in Jerusalem (?)
Quatrefoil: St. John the Younger
Window 6: Lower – Paul beholds the altar to the Unknown God
Window 6: Upper – Paul preaching to the Athenians
Quatrefoil: St. Philip
Window 7: Lower – Eutychus is returned to life by Paul
Window 7: Upper – Paul runs aground in Malta
Quatrefoil: St. Bartholomew
Window 8: Lower – The conversion of Lydia (?)
Window 8: Upper – Paul preaching to the Gentiles
Quatrefoil: St. Thomas
Window 9: Lower – Paul and the viper on Malta
Window 9: Upper – A centurion delivers the prisoners to the guard in Rome
Quatrefoil: (?)
Window 10: Lower – Paul appeals to Caesar
Window 10: Upper – Paul in prison, writing to Timothy
Quatrefoil: St. James the Less
Window 11: Lower – Paul’s martyrdom at the Tre Fontane in Rome
Window 11: Upper – Burial of St. Paul
Trefoil: St. Jude
In the baptistery one of the windows represents St. Paul’s baptism and that of the jailer at Philippi, with St. Simon depicted in the quatrefoil above; the other depicts our Lord taking children in his arms and giving the commandment to His disciples to go and baptize all nations, and the quatrefoil is of St. John the Baptist. The great rose window high up on the west wall represents Christ the King surrounded by eight Roman martyrs: Sts. Ignatius, Agnes, Sebastian, Cecilia, Lawrence, Pudenziana, Clement and Petronilla.