The New Judas is a new account of the life of Nestorius (ca. 386 to
451 CE), the Christological controversy that engulfed him, as well as the
critical imperial interventions into ecclesiastical politics during the
period from the First Council of Ephesus to the Council of Chalcedon. This
work endeavours to use both Nestorius' own Liber Heraclidis,
preserved only in Syriac, as well as the unprecedented abundance of
primary documents in Greek and Latin from Acta Conciliorum
Oecumenicorum, to answer a question of fundamental historical
importance: How could the teaching of Christ's two natures, one so closely
identified with Nestorius, deposed in 431, be vindicated in all its
essentials at the Council of Chalcedon in twenty years later? The answer
requires not only a reconsideration of the role of the supposedly timid
emperor Theodosius II, but also a new understanding of the evolving
position of Nestorius' chief opponent, Cyril of Alexandria.