The Collected Works of Witness Lee, 1964, volume 4, contains messages and fellowship given by Brother Witness Lee from September 11, 1964, through July 8, 1965. The contents of this volume are divided into four sections, as follows: 1. Twelve messages on various chapters of the New Testament given in Los Angeles from September 11, 1964, through January 8, 1965. These messages are included in this volume under the title Various Bible Studies. 2. A series of seven messages given during an informal training in Los Angeles on November 3 through December 22. This section has been previously published under the title Serving in the Meetings and in the Gospel. 3. A series of nineteen messages given during the winter conference in Los Angeles on December 25, 1964, through January 3, 1965. This section has been previously published under the title The Vision of God's Building. 4. A series of eighteen messages given in Los Angeles from November 5, 1964, through July 8, 1965. This section has been previously published under the title Practical Lessons on the Experience of Life.

At the time of regeneration, all believers receive the divine life and are begotten as children of God. Yet, this life most grow and it does so by regulation unto maturity and function. This regulation comes from revelation and issues in obedience. This word is crucial for our progress and training in the divine life for our maturity and function in our living and service to God.

This book traces "the New Testament service in the Gospel of Matthew from its beginning with the conceiving of Christ of the Holy Spirit, to finding Christ by following the heavenly living star, on to testifying of Christ in a living way, and then to the matter of following Christ. Finally, [it considers] the matter of life and the matter of work in the New Testament service according to the parables of the ten virgins and of the talents. In all these aspects, it is a governing principle in our service in the church life that the New Testament service is a service of coordination in every step to fulfill the Lord's purpose."

When God created man, He placed him before two trees: the tree of the knowledge of good and evil and the tree of life. In warning man to avoid the tree of the knowledge of good and evil, God indicated His desire for man to eat of the tree of life, signifying that man should receive God as his life supply. Witness Lee unveils in The Tree of Life that God is not looking for well-behaved Christians; He is looking for those who will experience and enjoy Christ as the reality of the tree of life.

In the Lord’s recovery during the past five hundred years the church’s knowledge of the Lord and His truth has been continually progressing. This monumental and classical work by Brother Witness Lee builds upon and is a further development of all that the Lord has revealed to His church in the past centuries. It is filled with the revelation concerning the processed Triune God, the living Christ, the life-giving Spirit, the experience of life, and the definition and practice of the church. In this set Brother Lee has kept three basic principles that should rule and govern every believer in their interpretation, development, and expounding of the truths contained in the Scriptures. The first principle is that of the Triune God dispensing Himself into His chosen and redeemed people; the second principle is that we should interpret, develop, and expound the truths contained in the Bible with Christ for the church; and the third governing principle is Christ, the Spirit, life, and the church. No other study or exposition of the New Testament conveys the life nourishment or ushers the reader into the divine revelation of God’s holy Word according to His New Testament economy as this one does.

"The entire Bible, from Genesis to Revelation, shows us that God is our enjoyment. God also has His fullness (Eph. 3:19b). He is full for us to enjoy. His fullness is the expression of the riches of Christ, and the reality of Christ is in the Spirit. We know this by the revelation of the Word. The riches of Christ are revealed in the Word. Furthermore, we can realize God as our enjoyment in our spirit (John 4:24)."