Religious Faith and Criticism of Religion of Enlightenment. Restrictions of the Use of Reason in the Light of Critical Philosophy. In the this paper I analyse the present problem situation of the christian faith with respect to the assumption of the existence of God and the role of Jesus and I criticize the problem-solutions offered by Bultmann, Ratzinger, Küng and Habermas. I try to show that all these solutions imply a similar arbitrary restriction of the use of reason. © Springer 2006.