Pope Francis hugs Rev. Martin Junge, General Secretary of the Lutheran World Federation, as Lutheran Archbishop Ante Jackelen, Primate of the Church of Sweden, is seen in the background at right, during an ecumenical prayer at Lund's Lutheran Cathedral, in 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. (AP Photo/Andrew Medichini), APTOPIX