We can trace a revival of theology in the Reformed Churches in the last quarter of a century. The new theological interest merits being called a revival of theology, for there has been a fresh and more thorough attention given to certain realities, either ignored or treated with scant notice for a considerable time previously.First among such realities now receiving more of the attention which their relevance and authority deserve, is the Bible, the record of the Word of God. There is an invigorating and convincing quality about theology which is Biblical throughout, being based on the witness of the Scriptures as a whole. The valuable results of careful Biblical scholarship had had an adverse effect on theology in so far as theologians had completely separated the Old Testament from the New in their treatment of Biblical doctrine, or in expanding Christian doctrine, had spoken of the theological teaching of the Synoptic Gospels, the Pauline Epistles, the Johannine writings, and so on, as if there were no such thing as one common New Testament witness. It is being seen anew that the Holy Scriptures contain a complete history of God's saving action. The presence of the complete Bible open at the heart of the Church, recalls each succeeding Christian generation to that one history of God's saving action, to which the Church is the living witness. The New Testament is one, for its Lord is one, and Christian theology must stand four-square on the foundation of its whole teaching.