When the Edict of Constantine allowed Christians to declare themselves in full freedom, art became a privileged means for the expression of faith. Majestic basilicas began to appear, and in them the architectural canons of the pagan world were reproduced and at the same time modified to meet the demands of the new form of worship. How can we fail to recall at least the old Saint Peter’s Basilica and the Basilica of Saint John Lateran, both funded by Constantine himself? Or Constantinople’s Hagia Sophia built by Justinian, with its splendors of Byzantine art?
While architecture designed the space for worship, gradually the need to contemplate the mystery and to present it explicitly to the simple people led to the early forms of painting and sculpture. There appeared as well the first elements of art in word and sound. Among the many themes treated by Augustine we find De Musica; and Hilary of Poitiers, Ambrose, Prudentius, Ephrem the Syrian, Gregory of Nazianzus and Paulinus of Nola, to mention but a few, promoted a Christian poetry which was often of high quality not just as theology but also as literature. Their poetic work valued forms inherited from the classical authors, but was nourished by the pure sap of the Gospel, as Paulinus of Nola put it succinctly: “Our only art is faith and our music Christ”.(12) A little later, Gregory the Great compiled the Antiphonarium and thus laid the ground for the organic development of that most original sacred music which takes its name from him. Gregorian chant, with its inspired modulations, was to become down the centuries the music of the Church’s faith in the liturgical celebration of the sacred mysteries. The “beautiful” was thus wedded to the “true”, so that through art too souls might be lifted up from the world of the senses to the eternal.
Along this path there were troubled moments. Precisely on the issue of depicting the Christian mystery, there arose in the early centuries a bitter controversy known to history as “the iconoclast crisis”. Sacred images, which were already widely used in Christian devotion, became the object of violent contention. The Council held at Nicaea in 787, which decreed the legitimacy of images and their veneration, was a historic event not just for the faith but for culture itself. The decisive argument to which the Bishops appealed in order to settle the controversy was the mystery of the Incarnation: if the Son of God had come into the world of visible realities—his humanity building a bridge between the visible and the invisible— then, by analogy, a representation of the mystery could be used, within the logic of signs, as a sensory evocation of the mystery. The icon is venerated not for its own sake, but points beyond to the subject which it represents. – from Letter to Artists (1999)
