strong objections to some forms of religious image, and there have been major periods of iconoclasm within Christianity. Images of Jesus and narrative scenes from the Life of Christ are the most common subjects, and scenes from the Old Testament play a part in the art of most denominations. Images of the Virgin Mary and saints are much rarer in Protestant art than that of Roman Catholicism and Eastern Orthodoxy. Christianity makes far wider use of images than related religions, in which figurative representations are forbidden, such as Islam and Judaism. However, there is also a considerable history of aniconism in Christianity from various periods. Illumination An illuminated manuscript is a manuscript in which the text is supplemented by the addition of decoration. The earliest surviving substantive illuminated manuscripts are from the period AD 400 to 600, primarily produced in Ireland, Constantinople and Italy. The majority of surviving manuscripts are from the Middle Ages, although many illuminated manuscripts survive from the 15th-century Renaissance, along with a very limited number from Late Antiquity. Most illuminated manuscripts were created as codices, which had superseded scrolls; some isolated single sheets survive. A very few illuminated manuscript fragments survive on papyrus. Most medieval manuscripts, illuminated or not, were written on parchment (most commonly of calf, sheep, or goat skin), but most manuscripts important enough to illuminate were written on the best quality of parchment, called vellum, traditionally made of unsplit calfskin, although high quality parchment from other skins was also called parchment. Iconography Christian art began, about two centuries after Christ, by borrowing motifs from Roman Imperial imagery, classical Greek and Roman religion and popular art. Religious images are used to some extent by the Abrahamic Christian faith, and often contain highly complex iconography, which reflects centuries of accumulated tradition. In the Late Antique period iconography began to be standardised, and to relate more closely to biblical texts, although many gaps in the canonical Gospel narratives were plugged with matter from the apocryphal gospels. Eventually the Church would succeed in weeding most of these out, but some remain, like the ox and ass in the Nativity of Christ. An icon is a religious work of art, most commonly a painting, from Orthodox Christianity. Christianity has used symbolism from its very beginnings. In both East and West, numerous iconic types of Christ, Mary and saints and other subjects were developed; the number of named types