In the light of what powers and faculties are human beings responsible individuals in the everyday? In his theological, historical and philosophical examination of reformed orthodox views of free will and divine sovereignty Paul Helm considers determinism and compatibilism and their historical development between 1500 and 1800. He graciously tackles the views of Richard A. Muller and Antonie Vos to argue that compatibilism is deeply rooted and represents the mainstream understanding of the reformers' conviction on the matter.