Institutes of the Christian Religion: Book Three (second part) & Book Four (Hardcover) by John Calvin

“Calvin was better qualified than any of his contemporaries, to present revealed truth in a connected and systematic form. His great natural abilities, his profound erudition, his well balanced and discriminating judgment, and his habits of diligent investigation, eminently fitted him to prepare such a work as the Institutes, in which the doctrines of the gospel are so clearly developed and harmonized, that the system has been closely associated with his name, from the period of its publication until the present time. The honor of Calvin consisted, not in suggesting ingenious theories and speculations, but in his general accuracy in interpreting the Holy Scriptures, and in detecting and pointing out the connection of Scripture doctrines, which, instead of being insulated, were shown to occupy their respective places in forming a complete and perfect system of Divine truth....” (from the Advertisement)