A classic three-volume Christian guide that explores the three parts of human nature—spirit, soul, and body—to help believers walk a victorious spiritual path.

The book teaches that human beings consist of three distinct parts:

• Spirit: The innermost part used to know and connect with God.

• Soul: The seat of human personality, including the mind, will, and emotions.

• Body: The physical part that interacts with the material world. 

Nee explains that the human spirit must rule over the soul and the body. Believers often mistake emotional or mental (soulish) experiences for true spiritual life. The book aims to help readers separate the soul from the spirit using the Word of God and the cross