Most denominations of Christianity have not generally practiced aniconism, or the avoidance or prohibition of types of images, even dating back to early Christian art and architecture. Those in the faith have generally had an active tradition of making artwork and Christian media depicting God, religious figures, and other aspects of theology. There have however been periods of aniconism in Christian history, notably during the controversy of the Byzantine iconoclasm of the eighth century, and following the Protestant Reformation of the 16th century, when Calvinism in particular rejected all images in churches, and this practice continues today in some Reformed (Calvinist) churches, as well as some forms of fundamentalist Christianity. The Catholic Church has always defended the use of sacred images in churches, shrines, and homes, encouraging their veneration but condemning anyone who would worship them as if they were gods themselves. The use of religious icons and images continues to be advocated at the highest level by religious leaders of major Christian denominations such as some Lutherans, Anglo-Catholics and Roman Catholics. The veneration of icons is also a key element of the doxology of the Eastern Orthodox Church. The Catholic Church and Eastern Orthodox Church accept the church council which condemned iconoclasm and mandated the use of sacred images, the icons of saints, and the crucifix in churches, public shrines, and in homes. The explanation of the consistency of sacred images with the Christian religion was largely based on the arguments of St. John Damascene. Modern Anglicanism contains both schools of thought - aniconism and iconodulism. While some Anglicans (typically of the Low-Church variety) maintain the aniconism of the English Reformation, articulated in the religious injunctions of Edward VI and Elizabeth I, as well as the Homily against the Peril of Idolatry and the Superfluous Decking of Churches, other Anglicans, influenced by the Oxford Movement and later Anglo-Catholicism, have introduced the devotional use of images back into their churches. Christian aniconism has only very rarely covered general secular images, unlike aniconism in Islam; Anabaptist groups such as the Amish are rare exceptions. Early Christianity Several voices in early Christianity expressed "grave reservations about the dangers of images", though contextualizing these remarks has often been the source of fierce controversy, as the same texts were brought out at intervals in succeeding centuries. Ernst Kitzinger described the mentions of Christian views on Christian images before the mid-6th century as "scattered and