The International Symposium was motivated by the conviction that when believers appreciate that the value of mercy is revered by all religions, interreligious understanding will be significantly advanced. To achieve that understanding, religious leaders gathered in the Pontifical Gregorian University to share their insights. Ensuring the concept’s direct connection to building peace and alleviating real suffering, several individuals offered their stories as witnesses of mercy, further proof of the universality of mercy’s application by religions and cultures from all over the world.