Synoptic Gospels synoptic gospels are similar to John: all are composed in Koine Greek, have a similar length, and were completed within a century of Jesus' death. They also differ from non-canonical sources, such as the Gospel of Thomas, in that they belong to the ancient genre of biography, collecting not only Jesus' teachings, but recounting in an orderly way his origins, his ministry and miracles, and his passion and resurrection. In content and in wording, though, the synoptics diverge widely from John but have a great deal in common with each other. Though each gospel includes some unique material, the majority
New Testament are most often part of an established lectionary (i.e., selected texts to be read at church services on specific days), and (together with an Old Testament reading and a Psalm) include a non-gospel reading from the New Testament and culminate with a Gospel reading. No readings from the Book of Revelation, however, are included in the standard lectionary of the Eastern Orthodox churches. Central to the Christian liturgy is the celebration of the Eucharist or "Holy Communion". The Words of Institution that begin this rite are drawn directly from 1 Corinthians 11:23–26. In addition, the communal recitation of the Lord's