The current global crisis of the prevailing civilization, in which ecological destruction is accompanied by political polarization, resignation and increasing violence while traditional forms of faith are eroding, provides the impetus to ask about the testimony of God as a source of hope. To this end, Anselm's theological movement of thought will be traced as a rational and mystagogical turn towards the performativity of faith. The starting point is the one argument of the Proslogion, which refers thinking to its dynamic of self-transgression, which it can neither establish nor bring to a closure. Turning to the reality of God confronts human thinking and striving with the aporias of self-failure and guilt. Anselm refers to Christ as the event of a love greater than which it cannot be conceived, which frees human beings anew to freedom and hope. To transform a person, this event must reach the mind and emotions, be accepted and responded to.