This guide supplements a course of the same title, which is sponsored by Christian churches for their local communities. Even without attending the course, the guide can be most helpful to those Christians who want to better articulate the reasons for their faith and to non-Christians investigating the faith. For each lesson, the guide includes a summary of the class presentation; reading assignment from the associated textbook (The Reason for God by Timothy Keller); a list of supplemental readings; and student exercises designed to help the reader internalize the material. The purpose of the course is to develop sensible, persuasive answers to the natural questions that come from secular people when they confront Christianity. Believers and unbelievers alike enjoy grappling with the issues in a friendly discussion environment. Specific objectives of the course are to: 1. Help Christians better articulate their beliefs. 2. Encourage Christian young people to keep their faith when they encounter the secular world. 3. Give unbelievers some good reasons to consider Christianity. The course consists of seven lessons that develop the Christian alternative to the secular worldview that drives our culture: 1. Christianity and Today's Culture 2. Why Christians Believe that a Personal Creator God Exists 3. The Christian View of Human Origins 4. Historical Reliability of the Bible's Old Testament 5. Credibility of the Bible's New Testament 6. Jesus Christ, the Divine Founder of Christianity 7. Explaining the Faith