With the publication of this book, the author has completed his trilogy on Christian metaphysics. (Each of the three books in the series may be used on a stand-alone basis.) The author's first book, entitled "As I See It: The Nature of Reality by God," is intended to be read first in the series. It is written as a narrative in the first person singular as if God were writing in order to more fully engage readers in their introduction to Christian metaphysics. The author's second book, entitled "Divine Metaphysics of Human Anatomy," is intended to be read last in the series. After the author wrote it, he recognized the need for a more basic book on Christian metaphysics - a primer of sorts - not for understanding past works on Christian metaphysics by other authors but for future studies on Christian metaphysics that would make it more understandable and practical for students to use during the third millennium of the Christian era. This current book, entitled "God, Our Universal Self: A Primer for Future Christian Metaphysics," is meant to be read second in the series - after "As I See It: The Nature of Reality by God" but before "Divine Metaphysics of Human Anatomy." Whereas the first book is meant to help students understand how to look at life from the standpoint of Christian metaphysics, this second book is meant to help the reader think metaphysically and solve problems daily using Christian metaphysics. The third book completes the trilogy by presenting a detailed view of the human body from the standpoint of contemporary Christian metaphysics; it is intended for advanced students of Christian metaphysics. All three books, taken together, will help their readers understand how spiritual reality and physical reality are interwoven. The three books will also enable readers to harmonize mainstream Christianity with Christian metaphysics by helping them to see that the two areas are complementary and not contradictory. Finally, the trilogy will enable readers to harmonize Biblical truth with facts and well-grounded theories from the natural sciences. (The only way to harmonize some aspects of the two is through Christian metaphysics.) All three books will be useful not only to Christians before the return of Christ Jesus but also to those living during his Millennial rule on earth: At the time of their initial publication, these three books are the only books that have been written intentionally for a readership living during the 1,000 years that Christ Jesus reigns on earth.