When people say that the doctrine of plenary or full inspiration of the Bible fails to do justice to the individuality of the Biblical writers, they simply show that they do not know what they are talking about. Yes, what a wonderful variety there is in the Bible. There is the rough simplicity of Mark, the unconscious, yet splendid eloquence of Paul, the conscious literary art of the author of the Epistle to the Hebrews, the matchless beauty of the Old Testament narratives, the high poetry of the Prophets and the Psalms. How much we should lose, to be sure, if the Bible were written all in one style! We believers in the full inspiration of the Bible do not merely admit that. We insist upon it. The doctrine of plenary inspiration does not hold that all parts of the Bible are alike; it does not hold that they are all equally beautiful or even equally valuable; but it only holds that all parts of the Bible are equally true, and that each part has its place.
-J. Gresham Machen in The Christian Faith in the Modern World (1935)