Pope Francis, right, meets the President of the Lutheran World Federation Bishop Munib Younan during an ecumenical prayer in the Lund Luteran cathedral, Sweden, Monday, Oct. 31, 2016. Francis traveled to secular Sweden on Monday to mark the 500th anniversary of the Protestant Reformation, a remarkably bold gesture given his very own Jesuit religious order was founded to defend the faith against Martin Luther's "heretical" reforms five centuries ago. (L'Osservatore Romano/Pool Photo via AP)