All Christian churches, also those of the Lutheran confession, must face the fact that as they are today they do not live from the Gospel alone but also from human illusions. It must be clear to us that only a church that is free of illusions in what it proclaims can today speak the Gospel to a disillusioned world- the pure, that is, the real Gospel, not a gospel that men have fashioned for themselves.
Sasse, The Theology of the Cross