R. C. Sproul is president and chairman of the board of Ligonier Ministries. He is the Minister of Preaching and Teaching at Saint Andrews Chapel in Sanford, Florida; has served as professor of systematic theology at several seminaries; and hosts the international radio program “Renewing Your Mind.” General editor of The Reformation Study Bible, he is also the author of more than 65 books, including The Mystery of the Holy Spirit, Faith Alone, and Truths We Confess: A Layman’s Guide to the Westminster Confession of Faith.