Christian art is an art form inspired by Christianity. There are many different definitions of it, Christian art is mainly defined by pieces that try to show or express the principles of Christianity. Most Christian groups and denominations either use or have used art to some extent. Other sects, however, have do not like the idea 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.