In the twenty-first century, which tends to celebrate diversity, it is important for Christians to appreciate and act upon what unites us. Through the ages since the New Testament era, there have been three provisions by God for uniting His people: creedal statements (“the faith that was once for all delivered to the saints” – Jude 3), for expressing our most basic beliefs; the Lord’s Prayer, for guiding our worship and communication to God; and the Ten Commandments, for governing our moral lives. Finding ourselves in a world of increasing relativity, our unity is strengthened, within our diversity of peoples and cultures, by recognizing that our Lord has pronounced a universal standard that is true and enduring in the Ten Commandments. The writings contained in this book, from many countries and continents, apply the Ten Commandments to contemporary issues with the authority of God’s Word and for His glory. William S. Barker, Ph.D. Professor of Church History Emeritus Westminster Theological Seminary