In the twentieth century the Reformed tradition was developed in several ways including additional confessions (Barmen, the Belhar Confession, the 1967 Confession of the PC(USA), and so on). It was also significantly augmented by the work of important thinkers like Karl Barth, T. F. Torrance, Jรผrgen Moltmann, Emil Brunner, Kathryn Tanner, and so on.
Oliver D. CrispThe book [Saving Calvinism] argues in each case that the Reformed tradition is broader and deeper than we might think at first glance - not that there are people on the margins of the tradition saying crazy things we should pay attention to, but rather that there are resources within the "mainstream" so to speak, which give us reason to think that the tradition is nowhere near as doctrinally narrow as the so-called "Five Points of Calvinism" might lead one to believe.
Oliver D. CrispIn many ways the book [Saving Calvinism] is trying to argue for a more popular audience things I've said in some more scholarly works, namely, that the Reformed tradition is broader and more variegated than is often reported today, and that we need to recapture something of this in order that we don't end up unnecessarily narrow in our doctrine and in order to keep some perspective.
Oliver D. CrispWe are still living with the consequences of that today in popular Reformed thinking from the likes of John Piper, R. C. Sproul, and Tim Keller.
Oliver D. CrispThere is no such thing as a stationary tradition. Traditions are always developing, living things.
Oliver D. Crisp