Abstract
The planetary civilization we are having affects positively world's religions. The former model, based on the isolation, suspicion and competency among religions, is being substituted for the search of common ties of those religions. The interreligious dialogue does not intend to eliminate the religious differences in order to create a common religion. On the contrary, starting from these differences, we are interested in those unity ties shared by all of them, beginning with the ethical-moral values. This contribution of religions to the creation of universal ethics is the first fruit of the interreligious dialogue. In the second part we analyse the relationship of the Christian religion with the others. Nowadays it is not understood to defend an absolutist conception of truth. Although Truth is unique, it is possessed in a multiple manner. That's why the interreligious dialogue is needed.