Colonel S. L. Brengle's books deals with a most vitally important spiritual subject, namely, holiness of heart and life, they constitute a valuable guide to the promises. Writing from the battlefield of actual spiritual warfare, dealing individually with hundreds of souls, mingling daily with the working classes, he thoroughly grasped the needs of his readers. His language is that of the people. He is no theorist writing essays on holiness from the sanctuary of his study, nor is he merely the pastor reading humanity through the narrowed needs of a single congregation.
Rev. George W. Ridout writes "It has been well said of Holiness that it resembles the light of the sun at noonday with its brightness, beauty, illumination and warmth; and the air redolent of sweets, and flowers. Holiness should bring sunshine, not gloom; happiness, not heaviness; gladness, not depression."
Being aware of his limitations, Ismael E. Amaya called for assistance from many great exponents of the doctrine of holiness. In these brief pages the reader will review a parade of such great scholars. Great take pleasure is taken in acknowledging the authors which have been quoted with much profit. Every effort has been made to trace the authorship and give due credit for the material used. This book is sent forth with a prayer and with the hope that it will prove to be a blessing to all who worship the Lord in the beauty of holiness.
J. B. Chapman introduces his book with "Webster says of a definition that it is 'a description of a thing by its properties,' and 'it is designed to settle a thing in its compass and extent.'" According to this no essentially new definition is called for unless some new property has been discovered. On this premise, new definitions are constantly needed in the natural sciences, as new discoveries are brought to light. But in philosophy and theology, new discoveries are rare, and new definitions are rare also. Therefore there is no call for a new vocabulary or terminology of Bible holiness, for the content of the subject is just the same now as when the fathers attempted to describe it.