Edgar introduces his readers to the apologetics of Cornelius van Til, who was one of the original apologists of the twentieth century. His approach to apologetics has become known as presuppositionalism. Edgar further provides an overview of the most prominent characteristics of Van Til’s method of apologetics.

The purpose of this volume is to provide primary sources from important authors with an apologetic concern. Chapter 1 provides an excerpt from Martin Luther, Concerning Christian Liberty (or On Christian Freedom), written in 1520. This work extols one of Luther’s central theological themes: justification by grace through faith. The excerpt is preceded by an introduction to the historical and theological context in which the work of Luther appeared.