A book containing the canonical texts of the four Evangelists Matthew, Mark, Luke, and John. The illustration of these books played an important role in early medieval art in the West, especially in the scriptoria of Irish and Northumbrian monasteries in the 7th and 8th centuries, with one of the most famous examples being the Lindisfarne Gospels (British Library, London). Many important gospel books were also produced during the Carolingian and Ottonian periods. In the eastern Christian tradition of Byzantium gospel books were a constant feature throughout the history of manuscript production.
http://www.bl.uk/onlinegallery/onlineex/illmanus/cottmanucoll/t/011cotnerd00004u00139000.html Description and illustration of Lindisfarne Gospels on British Library website.