How does the dual nature of man-both flesh and spirit-challenge our adoration of God? How can we understand this duality within ourselves in order to better celebrate our love for Him? Here, in this concise 1905 work, one of the most respected Bible scholars of the 19th century takes this difficult question to hand and explores, in profound, inspiring depth, how it can become the grounds not for doubt but for reassurance, the best proof we can ever have that we are God's handiwork and a new source of deep solace and joy.