This work contains a comprehensive analysis and defense of the historic Protestant doctrine of Sola Scriptura, as well as the Reformed and Presbyterian teaching on the regulative principles of worship. It carefully contrasts the historic Reformed view with the Romanism, Episcopalianism, Evangelicalism, and the practices of corrupt, modern Reformed churches. The author thoroughly refutes all the common modern arguments against the regulative principle (e.g. the arguments of churchmen such as Doug Wilson, James Jordan, Steve Schlissel and John Frame) and exhaustively proves that the early Presbyterians and Puritans were correct in their teaching. This book also contains a lengthy appendix on the views of John Calvin as well as an exegetical and theological critique of John Frame's Worship in Spirit and in Truth. Paperback (243 pp.)