In the left pane of the window is the double-traversed cross (top) which is that of an archbishop. Below that cross is a tiara (worn by the pope) and keys symbolizing the papacy and referencing the authority of the church found in Matthew 16:19, where Jesus tells Peter, “I will give you the keys of the kingdom of heaven, and whatever you bind on earth shall be bound in heaven, and whatever you loose on earth shall be loosed in heaven”. The green hat having ten tassels pendent on either side is that of an archbishop. With a biretta in the lower centre for the priest pastor. The various symbols in the left pane all reference the hierarchy or authority of the church.
The primary symbolism of the peacock (image on right) in early Christianity stems from an ancient Greek belief that the flesh of a peacock did not decay after death. This made it a potent emblem of immortality and the resurrection of Christ. Additionally, the bird’s annual shedding and regrowth of its beautiful feathers further reinforced the themes of renewal and spiritual rebirth. The chalice in this context represents the source of divine life, often interpreted as Christ himself, the Eucharist, or the waters of eternal life.
The combined Imagery of chalice and peacocks symbolizes Christian believers partaking in the waters of eternal life, thus ensuring their own spiritual rebirth and the hope of life after death. This motif is common in ancient Christian art, such as mosaics in the catacombs.