The Apostolic Constitutions or Constitutions of the Holy Apostles (Latin: Constitutiones Apostolorum) is a Christian collection of eight treatises which belongs to the Church Orders, a genre of early Christian literature, that offered authoritative "apostolic" prescriptions on moral conduct, liturgy and Church organization.[1] The work can be dated from 375 to 380 AD. The provenance is usually regarded as Syria, probably Antioch.[2] The author is unknown, even if since James Ussher it was considered to be the same author of the letters of Pseudo-Ignatius, perhaps the 4th-century Eunomian bishop Julian of Cilicia.[3]