At a time in which religion is breaking away from the normative power of its traditions and new forms of spiritual experience are emerging, religious philosophy must find criteria for what a religious experience is and how to judge its truth. In their empirical critique of religion L. Wittgenstein and R. Carnap accepted two forms of religious experience, which they described with an optical and acoustic metaphor. They denied their cognitive truth value, but not their value for life. However, an (...) extended concept of truth, which encompasses every correspondence between experience and reality, can also find truth in religious experiences of “transparency” and “resonance”. They differ from aesthetic experience not only by the depth of transparency and resonance, but also by their cognitive interpretation. What is experienced is cognitively referred to a final reality: either to a “summum ens” in this world, or to the whole of this world or something unknown beyond of this world. This final point of reference is a unity of “being” and “value”. Religion makes experiences of the everyday transparent for both aspects of an ultimate reality und motivates to a life full of resonance with this reality. (shrink)