“But in order to serve the community of today, theology itself must be rooted in the community of yesterday. Its testimony to the Word and the profession of its faith must originate, like the community itself, from the community of past times, from which that of today arose. Theology must originate also from the older and the more recent tradition which determines the present form of its witness. The foundation of its inquiry and instruction is given to theology beforehand, along with the task which it has to fulfill. Theology does not labor somewhere high above the foundation of tradition, as though Church history began today.”
-Karl Barth, Evangelical Theology, from his lectures at the University of Chicago and Princeton.