Whatever we may think of its character as reality or illusion, this sphere arises and exists in the fact that man depends on himself over against God… - Karl Barth

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Whatever we may think of its character as reality or illusion, this sphere arises and exists in the fact that man depends on himself over against God. But this means that in actual fact God becomes unknowable to him and he makes himself equal to God. For the man who refuses his grace God becomes the substance of the highest that he himself can see, choose, create and be. It is of this that he gives an account in natural theology He must do it, because this is the self-exposition and self-justification of the being of man in this sphere.