Most scholars agree that Christian art first appeared around the end of the 2nd century or the beginning of the 3rd century. Among these earliest examples are the wall paintings and epitaphs found in the Roman catacombs. At first the iconography was primarily simple and symbolic (e.g., doves, anchors, boats, and praying figures). More complex images included the Good Shepherd with his sheep and representations from the Hebrew Bible, including Jonah, Noah, Daniel, and the Three Youths in the fiery furnace. By the end of the 3rd century, Christians had begun commissioning sarcophagi with relief carvings that depicted narrative episodes from the Bible, both Old and New Testaments. Following the legalization of Christianity and the imperial support that following the conversion of the Emperor Constantine, Christian art was dramatically transformed in style, technique, context, and motifs. From the mid-4th through the end of the 6th centuries, Christians built and decorated churches and baptisteries; designed and made liturgical vessels; produced private devotional objects in gemstones, pottery, glass, ivory, fabric, and precious metals; painted panel portraits of their holy men and women; and began to illustrate their sacred texts. Older types and motifs, such as the Good Shepherd and Jonah, were gradually replaced by new iconography that emphasized the glory and triumph of Christianity over the traditional Roman gods. Along with the iconographic changes, new media emerged, in particular polychrome glass mosaic for walls, apses, and domes of church buildings.
Sacred texts and mystic meaning: An inquiry into Christian spirituality and the interpretive use of the Bible.