Sarah Peck, educator, writer, missionary, and secretary for Ellen G. White, wrote God's Great Plan as a textbook for eighth graders. The purpose of the book was to outline the plan of salvation and delve into the prophecies of Daniel and Revelation to show young people how they fit into the great controversy. The information in this book is timeless and will engage teenagers and adults who desire a strong biblical foundation and a clear study of the book of Revelation and Bible prophecy. Presented in an easy-to-read format, the book features illustrations and maps to make the words come alive. In addition, questions and suggested memory texts are included at the end of each chapter for those wishing to deepen their study.

This study of the sanctuary aims to give the reader an overall view of the entire sanctuary, including the earthly and the heavenly sanctuaries, and reaching its climax in the temple eternal, the earthly model as constructed by Moses, being a type or illustration of both the others. It also aims to make plain that the sanctuary symbolizes not only the redemptive work of Christ, but also the Christian experience of each of His followers, and of the church as a whole.