San Vitale, Ravenna: Early Christian Mosaics and Byzantine Art

In the aftermath of the Nika riots, Justinian and Theodora rebuilt the Hagia Sophia, which had burned in the riots. The new church, completed in 537 AD, was one of the greatest architectural achievements in human history, with a dome that appeared to float on air suspended by light itself. Militarily, the empire surged outward. Justinian's great general Belisarius reconquered North Africa from the Vandals in 533 and invaded Italy, taking it back from the Ostrogoths. Theodora was at the center of all of it, managing the political consequences of military campaigns, diplomacy, appointments, and suppression of rivals. When Justinian's great jurist Tribonian produced the Corpus Juris Civilis, the codification of Roman law that would become the foundation of legal systems across Europe for centuries, Theodora's influence shaped the sections dealing with women's rights and family law. She also wielded power ruthlessly, removing enemies, exiling, disgracing, and sometimes worse. The General John the Capadocian, one of the most powerful men in the empire, was brought down through an elaborate conspiracy she personally orchestrated, stripped of his offices, wealth, and eventually ordained as a priest against his will. The later years of Theodora's reign were shadowed by difficulty. The reconquest of Italy became a grinding and expensive war as the Ostrogoths regrouped and fought back. The empire's finances were strained. The Plague of Justinian struck Constantinople in 541, killing tens of thousands and leaving Justinian himself near death for weeks. The religious question never went away, with the divide between Chalcedonian and Miaphysite Christianity being not merely theological but political, geographic, and ethnic, cutting across the empire's most volatile fault lines. Theodora continued to shield the Miaphysite clergy, hosting them in the palace and protecting them from persecution. She also faced a threat of a more personal kind: Justinian's niece, the daughter of his sister, who represented a potential rival. Theodora moved against her with characteristic efficiency, arranging a marriage that neutralized the threat.

Justinian I initiated a major reconquest of the Western Mediterranean, including North Africa, Italy, and Spain, establishing the province of Spania. This reconquest was accompanied by cultural renewal, with culture and art fundamental to expressing imperial ideology. Theodora, wife of Justinian, represents a revolutionary figure who rose from humble origins and having exercised prostitution to become empress. Her story demonstrates that social origin or ethnicity did not determine one's ability to exercise power. She was a great patron of the arts, considering art the best vehicle for communicating ideas to the people, and her patronage shaped the ideological direction of the empire.

Justinian's reconquest of Italy was based on an illegal premise - Emperor Zeno had legitimized Theodoric the Great as king of Italy, giving the Goths legal authority to govern the peninsula. Justinian's decision to reconquer Italy violated this established arrangement. The Goths had maintained Roman institutions and the Senate, governing through the existing Roman administrative structure. Justinian's reconquest can therefore be seen as illegal from the perspective of the legal framework established by Zeno, as it violated the terms of the agreement that had legitimized Gothic rule. Justinian had a choice between paying tribute to Persia or launching military campaigns in the West. He chose to pay tribute and instead sent his generals Belisarius and Narses to reconquer Western territories. This decision was influenced by Justinian's lack of military expertise - he was not a military commander and relied on his generals. Justinian was also concerned about his generals becoming too powerful, as any notable victory might threaten his position. According to Procopius, Teodora was born to a circus bear-keeper (talakio) who was a member of the Green faction. When her father died, her mother remarried but was replaced by another man. Teodora and her sisters were forced into prostitution when they reached adolescence. This account of Teodora's origins is highly scandalous and contrasts sharply with her later position as empress.

Justinian I, known as Justinian the Great, invaded Italy in 535 CE to restore the Roman Empire to its former glory. His general Belisarius had already defeated the Vandals and reconquered Africa. After defeating the Ostrogoths, Justinian forces reconquered Italy including Rome itself. Justinian and his influential wife Theodora presided over a golden age in Roman history, with major building projects like the Hagia Sophia Church and the codification of Roman law.

Justinian I ascended to the throne in 527 AD and dreamed of reconquering the Western Roman Empire. With his general Belisarius, he recovered Italy, North Africa, and Hispania. However, he is remembered more for the Corpus Juris Civilis, a systematic codification of Roman law that became the foundation of modern civil law. His wife Theodora, born to a bear tamer and considered dishonorable, became co-emperor. During the Nika Revolt of 532, which killed 30,000 people and destroyed half the city, she declared she would rather die empress than live as a fugitive. Her courage saved the throne. From the beginning, Christianity in Constantinople and Rome differed in understanding religious authority. Rome believed the Pope had supreme authority, while Constantinople accepted honor but not absolute obedience. In 1054, tensions exploded when Roman bishops excommunicated the Orthodox Church, creating the Great Schism that would determine Constantinople's fate 400 years later.

Early Christian art adapted the Roman imperial victory formula, depicting Christ as a conquering emperor trampling his enemies. This imagery, visible in sixth-century Ravenna art and the Arch of St. John Lateran, was borrowed from Roman imperial art, where emperors were depicted trampling defeated enemies. The adaptation demonstrates how Christian artists repurposed established Roman visual formulas for Christological purposes, using imperial iconographic conventions to represent Christ's victory over death and evil. Early Christian art also adapted the Roman formula of transferring authority, visible in the Mausoleum of Constantia where Christ transfers the law to Moses. This imagery, also visible on the sarcophagus of Junius Bassus, depicts Christ handing scrolls to apostles Peter and Paul. The adaptation demonstrates how Christian artists repurposed established Roman visual formulas for Christological purposes, using imperial iconographic conventions to represent Christ's role as the new lawgiver and authority figure. Early Christian art depicted Christ's entry into Jerusalem on a donkey, with crowds spreading their garments and palm branches. This imagery, visible on the sarcophagus of Junius Bassus, was adapted from Roman imperial art, where emperors were depicted entering conquered cities in similar fashion. The 'Clemens Imperialis' formula, depicting an emperor entering a conquered city with his hand raised in blessing, was adapted for Christian use in early Christian art. The depiction of Christ's crucifixion was prohibited in early Christian art until the mid-fifth century, with only a few small-scale exceptions. Early Christian artists developed alternative visual formulas to represent Christ's passion, such as the cross with Christ's monogram (ICXC), which served as a substitute for the prohibited crucifixion imagery.

Early Christian art extensively borrowed from pagan traditions, transforming existing symbols to serve Christian purposes. The halo (nimbus) was adopted from Apollo's solar radiance imagery. Winged figures carrying portraits upward were borrowed from Roman victory goddess Nike statues. Most significantly, the Egyptian goddess Isis, shown breastfeeding her son Horus, became the model for the Virgin Mary holding baby Jesus. This borrowing provided Christianity with its first female divine presence, eliminating the need to feminize Jesus himself. These adaptations demonstrate how early Christians strategically utilized familiar pagan imagery to create distinctly Christian visual language while appealing to converts from various religious backgrounds.

The mausoleums of Hadrian (Castel Sant'Angelo) and Augustus established imperial visual conventions—golden statues atop towering monuments, strategic placement along major thoroughfares, and cosmic divine imagery—that profoundly shaped early Christian artistic representations of Jesus, including his clean-shaven appearance, celestial positioning, and regal postures, demonstrating how Christian artists consciously adopted and transformed Roman imperial iconography to depict Christ as a divine ruler.

Early Christian catacombs developed distinctive iconographic traditions that would influence later Christian art. The Chapel of the Greek in the Catacomb of Priscilla contains early Christian art depicting both Old Testament and New Testament scenes. The catacombs of the 4th century, including those of Calixtus, Sebastian, and Domitilla, were extensively developed during this period. Early Christians adapted pagan figures to serve Christian theological purposes: Orpheus was reinterpreted as a prefiguration of Christ's descent into the underworld, while Hercules was sometimes depicted as a Christological prefiguration. Early Christians did not see fundamental contradictions between pagan artistic traditions and Christian iconography, as they functioned within the cultural context of the late Roman Empire.

After Emperor Constantine made Christianity the favored religion of the Roman Empire in the early fourth century, he commissioned artists to create new Christian iconography for grand architectural projects across the Empire. Since there were no clear descriptions of Jesus in early Christian literature, artists drew upon Greco-Roman pagan imagery, particularly the depiction of Zeus on his throne, to create images of Jesus as a victorious, divine ruler. This established the visual template for Christian art that persists today. The Santa Pudentiana mosaic from around 415 CE shows Jesus on a bejeweled throne dressed in a gold toga, clearly drawing on Zeus' imagery of divine authority and power. This demonstrates how early Christians strategically borrowed visual conventions from the dominant pagan culture to communicate theological concepts to Roman audiences, creating a bridge between familiar visual language and Christian doctrine.

Roman mosaics originated from ancient Mesopotamian traditions but were refined by Romans for floor decoration in houses, using colored glass paste tesserae embedded in mortar. The Byzantines innovated by creating a 'sandwich' technique with gold leaf between glass layers, producing a truly golden effect. They also moved mosaics from floors to walls and ceilings of churches, maximizing the effect of limited natural light. The gold surfaces reflected artificial oil lamps, illuminating church interiors and enhancing the spiritual atmosphere. This transformation from floor decoration to sacred wall art represents a fundamental shift in religious visual culture.

Byzantine artists adapted Roman floor mosaics (using tesserae) for wall decoration in churches. This shift from floor to wall mosaics created a more mystical and spiritual atmosphere, as the small colored tiles planified and flattened images, reducing their connection to reality and enhancing their sacred, otherworldly quality.

In Byzantine churches, mosaic art moved from floors (as in ancient Roman and Greek buildings) to walls and vaults, marking the golden age of mosaic art. The technique uses tesserae (cubes) of marble, colored stones, and glass, with gold tesserae creating a luminous effect. When light enters through windows, it reflects off the gold surfaces, creating a shimmering effect that fills the church space with light. This effect was so powerful that Prince Vladimir of Kiev reportedly did not know whether he was on earth or in heaven when he visited Hagia Sophia. The Church of San Michele in Ravenna (built 545 AD) exemplifies this tradition, with its mosaics now in the Hermitage Museum.

This section traces the evolution of mosaic art from ancient Rome through Byzantine innovation. Roman mosaic involved creating images from small stone, marble, or glass tesserae, particularly popular for durable floor decorations in villas. Byzantine artists revolutionized the technique by introducing colored glass tesserae (смальта) and the gold leaf technique, where thin gold sheets were placed between glass pieces before baking. This created a shimmering, ethereal effect that appeared to glow with light, making Byzantine mosaics particularly valued in religious contexts for their spiritual and luminous qualities.