Jon Wood studies the changing clerical identity in sixteenth-century Zurich, situated within broader apocalyptic and eschatological themes of Christendom. Early Reformation in Zurich revised traditional priesthood rather as a kind of prophethood. Heinrich Bullinger’s End-Times idiom then promoted a distinctly Protestant reclamation of clerical priesthood. Private manuscripts supplement Bullinger’s published works on this fraught subject. This study re-assesses aspects of Reformation history in areas of church-state coordination and in related theological concepts of covenant and justification.