Here is the most up-to-date and comprehensive response to Protestant objections to Catholicism available in print. This book answers the arguments of early Reformers such as Luther and Calvin and of contemporary Protestant thinkers. Using Scripture, it demonstrates the biblical sources of Catholic faith. Delving into history, it shows the role of Church authority in defining doctrine. This book is divided into four sections each answering a key question asked by Christians over the centuries: What is my authority? What is the Church? How am I saved? Who belongs to the Body of Christ? This book is a reliable resource for anyone seeking well-researched, readable and persuasive answers to Protestant arguments against the Catholic Church. Paper.