This is the "last of the Christian apologies," written by influential author and bishop of Cyrrhus (ca. 393-ca. 457). The second volume of Theodoret in the ACW series, his On Divine Providence, was published.
Theodoret was born at Antioch towards the close of the fourth century and died at Cyrus, or Cyrrhus, the capital of the Syrian province of Cyrrhestica, in 457. He was educated in the monastery of St. Euprepius, near Antioch, ordained a deacon by Bishop Porphyrius, and elected Bishop of Cyrus in 420 and 423.