[1] Liturgical use in churches of a distinct Gospel book remains normal, often compulsory, in Eastern Christianity, and very common in Roman Catholicism and some parts of Anglicanism and Lutheranism.
In the Middle Ages, the production of copies of the Bible in its entirety was rare because of the huge expense of the parchment required.
[3] Many of these volumes were elaborate; the Gospel Book was the most common form of heavily illuminated manuscript until about the 11th century, when the Romanesque Bible and Psalter largely superseded it in the West.
Latin books often include the Letter of Jerome to Pope Damasus where Jerome set out to the Pope the reasoning behind his new Vulgate translation and arrangement of the texts, and many Greek ones the Epistula ad Carpianum (Letter to Carpian) of Eusebius of Caesarea explaining the Eusebian Canons he had devised.
[6] Luxuriously illuminated gospel books were mainly a feature of the Early Middle Ages, as the evangeliary or a general lectionary gradually became more common for liturgical use, and other texts became most favoured for elaborate decoration.
[10] When carried in procession, the Book of the Gospels is held slightly elevated, though not over the head.