Pope Francis, marking the Holy Year of the Catholic Church on Thursday, opened the symbolic Holy Door at a prison in Rome, offering a message of hope and forgiveness to inmates. The 88-year-old Catholic pontiff told the prisoners during the ceremony not to lose hope.

Pope Francis inaugurated his Holy Year at Rome’s main prison on Thursday, bringing a message of hope to inmates and involving them in the Catholic Church’s once-every-quarter century celebration that is expected to bring some 32 million pilgrims to Rome.