Book excerpt: Barbara Pitkin traces the way in which Calvin's exegetical labors contributed to his understanding of faith. Through detailed analysis of Calvin's interpretation of selected biblical passages, this study shows how his views evolved. Pitkin describes the gradual development of the mature Calvin's view that faith exhibits a twofold character--saving faith and providential faith--that corresponds to the twofold aspect of its object--Christ as both the incarnate and eternal Son of God.