"Clark's study of Caspar Olevian's doctrine of the covenant and its 'twofold benefit,' justification and sanctification, is a fine and needed addition to the literature on the developing Reformed tradition during the sixteenth century. Contrary to the claim of some who advocate a 'Calvin against the Calvinist' approach to the development of the Reformed tradition, Clark demonstrates that Olevian's work was 'in Calvin's line.' Since Olevian was an important contributor to the writing of the Heidelberg Catechism, Clark's study also sheds light upon that great Reformed confession." -- Cornelis P. Venema