"Like Karl Barth he challenged the leaders of modern rational and liberal Christian theology and proclaimed a theology of revelation. The Christian faith, he maintained, arises from the encounter between individuals and God as He is revealed in the Bible. Brunner, in attempting later to leave a place for natural theology in his system, came into conflict with Barth over the question of natural revelation. Brunner refused to accept the radical divorce between grace and human consciousness that Barth proposed."