In this manual of Christian faith, Scottish minister and author Horatius Bonar investigates the words of God with respect to the human condition. Throughout the Bible, God's words are relayed by messengers and prophets. In the various dialogues received from the Lord, the views of the divine regarding His creation mankind are revealed. It is through these descriptions that Horatius Bonar commences his investigation of God's correspondences with man; gradually, the character of the Lord is revealed, and his intentions and purposes for humanity unveiled. The event which most richly demonstrates God's connection with human beings is the birth and life of Jesus Christ. Bonar notes the significance of the blood shed by Jesus is connected with the blood shed by Abel during the Book of Genesis. Furthermore the teachings and sermons of Christ reveal God's views on mankind and its destiny. The importance of man acknowledging his own fallibility and flaws - of discarding his insensibility - is expounded upon.

With informed readings of scripture, Horatius Bonar discusses the teachings central to Christianity, and the good Christian's relationship to the divine. Various topics are covered in this book's chapters, such as the importance of strengthening the soul to guard against sin, the symbolism and holy power of the crucifix, and how Christ's spirit dwells within Christians, lending support and resolution through times of hardship. What holiness is, and its ancient origins in mankind's interactions with the Lord and his messengers, is detailed. Throughout this study, Horatius Bonar's scholarship is in the fullest evidence. Definitive and emphatic in his guidance, the words are delivered straightforwardly, with little dwelling on the obscure. Primarily through the use of the New Testament scripture, the author seeks to confer an understanding of Christian principles and the veneration of God. Particular attention is paid to the book of Romans, with the interpretations of the Apostle Paul taken.