VATICAN CITY – Serious research on Martin Luther can help heal relations between Catholics and Protestants, highlight what was legitimate about the Reformation and pinpoint the errors and sins that led to the division of the church, Pope Francis said.

Martin Luther would be amazed. He would never have imagined the Pope of Rome could be a mere guest in any Christian church.

Oct. 31, 2017 will mark the 500th anniversary of the date Martin Luther posted his 95 proposals on the door of a Catholic church in Germany to launch the Protestant Reformation. Indeed, Luther’s imprint on Christianity has never faded over the centuries.

VATICAN CITY – The ecumenical commemoration of the 500th anniversary of the Protestant Reformation in 2017 can be a time to celebrate the fact that Christians are no longer "on the path of separation, but that of unity," said Cardinal Walter Kasper, former president of the Pontifical Council for Promoting Christian Unity.

VATICAN CITY - Pope Francis will visit Sweden in October to participate in an ecumenical service and the beginning of a year of activities to mark the 500th anniversary of the Protestant Reformation.