Here is C.S. Lewis on the historical critiques of some of the more liberal theologians of the last century (a la, Bultmann) You can find it in his essay"Modern Theology and Biblical Criticism".
All theology of the liberal type involves at some point - and often involves throughout - the claim that the real behavior and purpose and teaching of Christ came very rapidly to be misunderstood and misrepresented by his followers, and has been recovered or exhumed only by modern scholars. Now long before I became interested in theology I had met this kind of theory elsewhere. The tradition of Jowett still dominated the study of ancient philosophy when I was reading Greats. One was brought up to believer that the real meaning of Plato had been misunderstood by Aristotle and wildly travestied by the neo-Platonists, only to be recovered by the moderns. When recovered, it turned out (most fortunately) that Plato had really all along been an English Hegelian, rather like T.H. Green.
I will write more one day. When I am less busy analyzing Calvinism after Calvin.