During an ecumenical prayer service in Latvia Monday, Pope Francis warned Christians to not let the faith turn into another piece of history, but to keep it an active part of their lives and communities: “This is a recurring danger for all of us. . . .We can take what gives us our very identity and turn it into a curio from the past, a tourist attraction, a museum piece that recalls the achievements of earlier ages. . . .The same thing can happen with faith.”