More Barth, on how to view our theological fathers:
Time and time again, the community grows used to living from what was said in it and to it yesterday: as a rule it lives from the Christian knowledge of yesterday. In the meantime, it is to be hoped, theology has advanced somewhat further, and what it supposes to know, what it ventures to think and to say today, will only seldom agree completely with what the fathers of yesterday thought and said. The far greater likelihood is that the newer theology will vigorously take exception to the fathers, especially to the immediate fathers. Even if this tension is justified by the vigorous nature of theological science, theology will still do well to keep in contact with its predecessors.
By no means will we drop the problems which concerned them; instead, we will pursue them further, repeatedly considering the very problems they posed, although at the same time no doubt putting them in the right perspective. Otherwise, theology might find the sons of today proving tomorrow to be enthusiastic rediscoverers and perhaps avengers of their grandfathers. The work of overcoming past weaknesses and errors, a work which was perhaps only apparently completed, would then have to begin all over again. Ma the good Lord preserve us from that!
Evangelical Theology: An Introduction, pp. 46-7