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Tomus ad Antiochenos

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  • 5 chapters

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Through Jesus and Creation myth

The central concern is to achieve theological agreement based on the Nicene Creed. By recognizing that certain theological points of contention in the Arian controversy were based not only on differences of belief, but also on different language rules or conceptual differences between Latin and Greek, the Tomus paved the way for the Trinitarian theological language rules of the three Cappadocians from the 370s onward: Basil of Caesarea, his brother Gregory of Nyssa, and their mutual friend Gregory of Nazianzus subsequently established the concept of the one being (Ousia) and the three hypostases of God, which became binding with the decision of the First Council of Constantinople in 381.

Church and dogmatic historical context

Theological debates on the constellation of the Trinity

The background of the Tomus ad Antiochenos is the controversy about the Trinity, traditionally known as the "Arian" controversy, and in today's dogmatic historiography also as the "Trinitarian" or "subordinating dispute" The opponents agreed that the Logos was incarnate in Jesus Christ. However, the question of how to understand the relationship of this Logos to God, the relationship of the Son to the Father, was particularly controversial. The Council of Nicaea in 325 had condemned the Arian doctrine that the Son or Logos was not truly God, but a creature (albeit the first and highest creature) of God and had a beginning. But two points in particular sparked decades of controversy almost immediately after the council:

  1. The anathematisms attached to the Nicene Creed condemned as heretics those who claimed that the Son was of a different hypostasis or being (Ousia) from the Father. This contradicted the understanding of the Trinity that was then widespread in the Greek-speaking east of the Roman Empire in the theological wake of Origen, according to which the Father, Son, and Holy Spirit were three distinct hypostases.
  2. The Nicene statement that the Son was of the same nature (Homoousion) as the Father, which emphasized the unity of God, could be understood modalistically, which is why the formula had a theologically heretical effect on the "Origenist middle group" that dominated in the East. About 30 years later, from about 357, the moderate "Origenistic" Homooeusians finally emerged, who taught only the likeness of the Son to the Father "according to the Scriptures," but rejected a more precise definition of this likeness, since, for example, the nature of the Father and the Son is not discussed in the Scriptures. The radical Heterousians advocated the essential difference of the Son from the Father, and whose radicalism set in motion the dynamic of development.

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