 Around the dome there are various symbols, including the figure of Jesus Christ; the Holy Spirit represented by a dove; the Greek letters alpha and omega superimposed on the scriptures; wheat and grapes representing the Eucharist; and the Phoenix symbolizing resurrection etc.A series of high, narrow, stained-glass windows are set into the main walls of the cathedral below the dome depicting scenes in the life of Christ and early Christianity in Armenia.The patron saint of the cathedral, St. Vartan, is depicted fighting the Sassanid Persians who threatened the Armenian Church during the fifth century.