Work dossier · summary and historical context
The Symbolum Theodori Mopsuesteni Et Ejus Refutatio is a Latin polemical work by Marius Mercator, a 5th-century controversialist, containing the creed of Theodore of Mopsuestia followed by a refutation. The Greek original of Theodore's creed is lost, and the Latin text survives in a single manuscript tradition tied to anti-Pelagian and anti-Nestorian debates. Mercator's refutation, likely composed around 428–430 during the Nestorian controversy, was later used to condemn Theodore's Christology, especially at the Council of Constantinople (553). The work is preserved in collections of conciliar acts and reflects the theological conflicts of the early 5th century.
The work is a key source for understanding the reception of Theodore of Mopsuestia's Christology in the 5th century and the polemical strategies of anti-Nestorian writers. It also provides insight into the transmission of conciliar acts and the use of creeds in theological controversies. Its survival in a single manuscript tradition highlights the selective preservation of texts in late antique Christianity.
The work dates to ca. 428–430, during the Nestorian controversy, when Marius Mercator, a Latin controversialist, was active between Rome and Constantinople. Theodore of Mopsuestia (c. 350–428) was a leading Antiochene theologian whose Christological views were later condemned as Nestorian. Mercator's refutation survives only in Latin; the Greek original of Theodore's creed is lost. The text is preserved in a single manuscript tradition linked to anti-Pelagian and anti-Nestorian polemics, and it circulated in collections of conciliar acts. The refutation was used in the 5th–6th centuries to condemn Theodore's Christology, especially at the Council of Constantinople (553). The precise date depends on Mercator's movements, which are not fully documented. The work is a polemical piece, and Mercator may misrepresent Theodore's views.
Apparatus · what the pipeline recorded
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