THEODORET, bishop of Cyrrhus, an important writer in the domains of exegesis, dogmatic theology, church history and ascetic theology, was born in Antioch, Syria, about 386. At an early age he entered the cloister; and in 423 he became bishop of Cyrrhus, a small city in a wild district between Antioch and the Euphrates, where, except for a short period of exile, he spent the remainder of his life. The date of his death is uncertain, but it must have been not earlier than 457.
the 'Epavtarris, or II0X6,uopckos (written about 446), consist ing of three dialogues, entitled respectively "Arperros, 'Aairyxvros, and 'Arath'is, in which the monophysitism of Cyril is opposed, and its Apollinarian character insisted on. Among the apologetico-dogmatic works of Theodoret must be reckoned his ten discourses TIepi. rpovolas.
BiBuoGRAPHY.—The edition of Sirmond (Paris, 5642) was after wards completed by Gamier who has also written dissertations on the author's works. Schulze and Nosselt published a new edition (6 vols., Halle, 1769-74) based on that of their predecessors; a glossary was afterwards added by Bauer. The reprint will be found in vols. lxxx.-1xxxiv. of Migne, and considerable portions occur in Mansi. The church history has been published frequently in connection with the histories of Socrates, Sozomen and others, e.g., by Valesius (1693) and Reading (1720). There is an English translation of the history by Bloomfield Jackson in the Nicene Post-Nicene Fathers, series ii., vol. iii. ; the translation including also the dialogues and letters.
Besides the earlier labours of Tillemont, Ceillier Oudin, Du Pin and Fabricius and Harless, see Schrockh, Kirchengesch., vol. xviii.; Hefele, Conc.-gesch., vol. ii. ; Richter, De Theodoreto Epp. Paul. Interprete (Leipzig, 1822) ; Binder, Etudes sur Theodoret (Geneva, 1844) ; Staudlin, Gesch. u. Lit. der Kirchengesch. (Hanover, 1827) ; Kihn, Die Bedeutung der antioch. Schule (1866) ; Diestel, Das A. T. in der christl. Kirche ( Jena, 1869) ; Specht, Theodor v. Mopsvestia u. Theodoret v. Cyrus (Munich, 1871) ; Roos, De Theodoreto Clementis et Eusebii Compilatore (Halle, 1883) ; Nolte in the Tubing. Quar talschr. (1859), p. 302 seq.; Moller, art. "Theodoret," in Herzog Hauck's Realencykl.; Venables's article in Smith and Wace's Dict. of Christian Biography; also Bardenhewer's Patrologie, p. 345 ff.