is no deacon, a lector might process in with the Book of the Gospels). When the Book of the Gospels is used, the first two readings are read from the lectionary, while the Book of the Gospels is used for the final reading. The lectionary is not to be confused with a missal, gradual or sacramentary. While the lectionary contains scripture readings, the missal or sacramentary contains the appropriate prayers for the service, and the gradual contains chants for use on any particular day. In particular, the gradual contains a responsory which may be used in place of the responsorial psalm. Eastern lectionaries In the Eastern Churches (Eastern Orthodox, Oriental Orthodox, Eastern Catholic, the Assyrian Church of the East, Ancient Church of the East, and those bodies not in communion with any of them but still practicing eastern liturgical customs) tend to retain the use of a one-year lectionary in their liturgy. Different churches follow different liturgical calendars (to an extent). Most Eastern lectionaries provide for an epistle and a Gospel to be read on each day. The oldest known complete Christian Lectionary is in the Caucasian Albanian language. Byzantine lectionary Those churches (Eastern Orthodox and Byzantine Catholic) which follow the Rite of Constantinople, provide an epistle and Gospel reading for most days of the year, to be read at the Divine Liturgy; however, during Great Lent there is no celebration of the liturgy on weekdays (Monday through Friday), so no epistle and Gospel are appointed for those days. As a historical note, the Greek lectionaries are a primary source for the Byzantine text-type used in the scholarly field of textual criticism. Epistle and Gospel The Gospel readings are found in what Orthodoxy usually calls a Gospel Book (Evangélion), although in strict English terms the Greek ones are in the form of an Evangeliary, and an Epistle Book (Apostól). There are differences in the precise arrangement of these books between the various national churches. In the Byzantine practice, the readings are in the form of pericopes (selections from scripture containing only the portion actually chanted during the service), and are arranged according to the order in which they occur in the church year, beginning with the Sunday of Pascha (Easter), and continuing throughout the entire year, concluding with Holy Week. Then follows a section of readings for the commemorations of saints and readings for special occasions (baptism, funeral, etc.). In