It is difficult to define the Word. In the book of Revelation, the Son of God is called the Word; the book of Ephesians indicates the Word as the Spirit; and in John the Lord Jesus tells us His words are spirit and life. In this booklet compiled from Life-study of Philippians, Witness Lee fellowships concerning the Word, its oneness with the Spirit, and the importance of exercising our spirit to pray when we come to the Word.