He challenged the church to rethink its own mission in the radically secular world of the twentieth century... The nonbelieving brave men he met in the anti-Nazi underground, the stark realities of prison life, and his disappointment in the professional churchmen of Germany, all may have influenced Bonhoeffer to see real Christianity as "non-religious" and "worldly"... The opposition between sacred and secular, supernatural and natural, seemed unreal to him -- the apparent opposites are united in Jesus Christ.
