This work investigates the conceptualization and categorization of sin across the various texts of the New Testament to determine how early Christian communities understood moral failure and divine reconciliation. Jeffrey S. Siker, a scholar of biblical studies, utilizes historical-critical methods to examine how different authors within the New Testament canon define, address, and respond to the presence of sin. By analyzing the specific theological frameworks of individual books, the author argues that there is no singular, monolithic doctrine of sin in the New Testament, but rather a diverse array of perspectives shaped by the specific contexts of the early church.

Scholars and students of theology frequently cite this work as a useful resource for understanding the diversity of moral thought within early Christian literature. Experts highlight the book's structured approach as an effective tool for navigating the complex theological landscape of the New Testament.