Pilgrims participating in the World Youth Day 2016 hold lit candles as they pray, during the evening vigil with Pope Francis at the Campus Misericordiae in Brzegi, near Krakow, Poland, Saturday, July 30, 2016. The 79-year-old Francis has had an unrelenting schedule since he arrived in Poland on Wednesday for World Youth Days, a global Catholic gathering which culminates Sunday. (AP Photo/Czarek Sokolowski)