In historical use by: Ethiopian Orthodox (broader canon); Syriac Orthodox (as Books I-II of the Clementine Octateuch) — A church-order text presented as the risen Lord's teaching to the apostles, preserved in Syriac and Ethiopic. In the Ethiopic tradition it is counted among the church-order books of the broader canon; in Syriac it forms the first two books of the Clementine Octateuch, the collection of church orders used by the Syriac Orthodox and the Church of the East. No major church uses it as an active liturgical manual today; it is studied chiefly for early Christian worship and baptismal practice.
Presented as post-resurrection teaching given by Christ to the apostles; actual author unknown. Scholars have proposed dates ranging from the 2nd to the 5th century AD, with most now favoring a 4th-5th century composition (possibly Cappadocian in origin) that draws on older, 3rd-century source material. Combines an apocalyptic vision of the end times with detailed instructions on church order, liturgy, and ministry.