The book "Gospel Themes: A Treatise on the Salient Features of "Mormonism"" by author Orson Ferguson Whitney is a detailed analysis of the basic principles and teachings of the Latter Day Holiness Church, known as the Latter Day Holiness Movement or simply "Mormons". The book examines the key themes of the evangelical faith of this religious community, including the concepts of God, Jesus Christ, the Holy Spirit, salvation, eternal life, and other aspects that form the basis of "Mormonism" teachings. The author tries to give the reader a clear idea of the values and teachings of this religion, revealing their meaning and encouraging reflection and reflection. The book is intended for those who are interested in the study of religious topics and wish to better understand "Mormonism" through the prism of its main deep ideas.