This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
In 1934, the same year he published a sharp public rejection of Emil Brunner's argument for a point of contact in natural theology, Karl Barth was the principal author of the Barmen Declaration, in which the Confessing Church in Germany rejected the German Christian movement's attempt to fuse the gospel with National Socialist ideology.
That declaration was not an abstract theological dispute conducted at a safe distance from politics. Barth had already refused an oath of unconditional loyalty to Hitler while teaching at Bonn, a refusal that cost him his position there and moved him to Basel, so the Barmen Declaration extended into collective church statement a resistance he had already made personally and at direct professional cost.
The declaration's argument was theological rather than purely political, it held that the church's sole head is Jesus Christ, not any other authority, human ideology or national movement, the same insistence on revelation over cultural continuity that had structured Barth's Romans commentary fifteen years earlier. The 1934 stand against the German Christian movement was, in that sense, the same theological commitment applied to the specific political crisis of Nazi Germany rather than a separate, later position.