The CBM project concerns the Byzantine delivery of biblical manuscripts in the broad sense of the term, i.e. a delivery that follows immediately from early-Christian delivery (the first three centuries AD). This manuscript delivery occurred within the ecclesiastical and liturgical culture of Byzantium (Palestine, Egypt, Arabia, Syria, Asia Minor, Bithynia, Macedonia, Thrace with the capital Constantinople, Greece, Cyprus, Crete, Mount Athos, other eastern regions, and towards the West, as far as South Italy (Calabria).
The handwritten documents that were used in the churches and monasteries and for which they were manufactured are testimonies to this. We adhere to the usual division into early, middle and late Byzantine eras, but we regard this tradition as continuing after the fall of Constantinople far into the 19th century and even into the beginning of the 20th. Byzantine manuscripts are usually understood as Greek manuscripts, but the term may also be attributed to Syrian, Coptic, Armenian, Georgian, Arabic, Ethiopian, Church Slavonic, or Romanian manuscripts for example. There is a clear distinction between Byzantine manuscripts (from the 4th century onwards) and Byzantine textual forms, which NT textual criticism associates with later ages.