In this New Studies in Biblical Theology volume, David Peterson challenges the common assumption that the New Testament views sanctification as primarily a process. He argues that its emphasis falls upon sanctification as a definitive event, God’s way of taking possession of us in Christ, setting us apart to belong to him and to fulfill his purpose for us. Simply to identify sanctification with growth and holiness, he contends, obscures the emphasis and balance of New Testament teaching and creates unrealistic expectations. Throughout this study Peterson builds his case on the careful exegesis of relevant passages, with a keen eye for the pastoral implications of his findings. Addressing key issues in biblical theology, the works comprising New Studies in Biblical Theology are creative attempts to help Christians better understand their Bibles. The NSBT series is edited by D. A. Carson, aiming to simultaneously instruct and to edify, to interact with current scholarship and to point the way ahead.