The Body of Christ is a mysterious matter. While we may realize that the Body is the church, it is also something much deeper. Ephesians tells us that Christ is the One who fills all in all (1:23), and such an immeasurable and boundlessly great Lord surely needs a Body of fullness to express Him. In this book, Witness Lee considers the history, or origin, of the Body of Christ; the elements, essence, and reality of the Body; the living in the Body; and the service of the Body. In doing so, he offers a thorough view of this mysterious, living, and real organism, the Body of Christ.