"My House shall be called a house of prayer for all peoples" (Isa 56:7). "Whose house are we if indeed we hold fast the boldness and the boast of hope firm to the end" (Heb 2:6, Darby) What is the ministry of the church, the house of God? It is the ministry of prayer, a ministry that is largely neglected by the church today. The church is to pray, "Hallowed be thy name. Thy kingdom come. Thy will be done, as in heaven, so on earth" (Mat 6:9). The church is to pray authoritative prayers which bind and loose that which heaven wills to bind and loose. The church is to pray through and put in execution all that God has purposed and called for in spite of opposition. The church is to use the Name of the Lord Jesus Christ in fulfilling her mission. In this present book, Watchman Nee touches upon all the various aspects of the ministry of the church. He exhorts the church to exercise her ministry as well as warns God's people against the sin of presumptuousness. How we need to first submit ourselves as a church to God's authority before we can exercise the given authority in prayer. May this lost power be restored to the church.