Catechetical Homilies

The Homiliae catecheticae, or Catechetical Homilies, are sixteen lectures that Theodore of Mopsuestia gave to candidates preparing for baptism. Theodore, the leading theologian of the Antiochene school, was bishop of Mopsuestia in Cilicia from about 392 until his death in 428. The Greek original is lost. The homilies survive complete only in a Syriac translation, discovered by Alphonse Mingana in the early twentieth century and published by him in 1932–33, with fragments of the Greek preserved in later quotation. The date of their delivery is not documented, and scholars have argued over whether they come from Theodore's years in Antioch or from his episcopate. They belong to the great age of fourth-century catechesis, alongside the lectures of Cyril of Jerusalem, John Chrysostom, and Ambrose, when the church instructed converts in the faith before and after their initiation.

The first ten homilies expound the Nicene Creed phrase by phrase. Theodore reads it as a defense of the full divinity and full humanity of Christ, and he insists that the Son assumed a complete man, with body and rational soul, so that humanity might be restored through Christ's obedience. The Holy Spirit and the church receive their share of attention in turn. The remaining homilies turn to the Lord's Prayer, baptism, and the Eucharist. Here Theodore's characteristic method is most visible. He teaches that the liturgy is a sacramental drama in which present rites picture heavenly realities. The baptismal candidate is sealed, anointed, and plunged into water as a sign of dying and rising with Christ, and the eucharistic action portrays the Lord's death, burial, and resurrection. Throughout, the instruction is exegetical in manner, drawing on Scripture closely and moving from the text to its pastoral meaning.

The homilies matter first as a primary witness to how the Eastern church of the late fourth and early fifth centuries actually taught its converts, and they remain one of the fullest sources for the Antiochene baptismal and eucharistic liturgy. They also preserve Theodore's thought at its most constructive. His reputation suffered after his writings were condemned at the Second Council of Constantinople in 553, and the Greek texts largely perished, but the Syriac tradition, especially in the Church of the East, kept him as an authoritative interpreter. The recovery of the homilies allows a direct reading of his teaching rather than a reading filtered through his critics.

Who should read this: Readers interested in the early liturgy, in sacramental theology, or in the Antiochene approach to Christ and Scripture will find here a patient, concrete teacher. It suits those who want to see what baptismal preparation looked like in the ancient church. It is not for readers seeking devotional brevity or a casual introduction to the Fathers, since the argument is sustained and assumes a willingness to follow a creed line by line.