VATICAN CITY, VATICAN - DECEMBER 24: Pope Benedict XVI attends the Christmas Eve Mass at St. Peter's Basilica on December 24, 2010 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
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VATICAN CITY, VATICAN - DECEMBER 24: The crib is seen in St. Peter's Basilica during the Christmas Eve Mass held by Pope Benedict XVI on December 24, 2010 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
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Pope Benedict XVI arrives to lead the Christmas mass in Saint Peter's Basilica at the Vatican December 24, 2010. REUTERS/Max Rossi (VATICAN - Tags: RELIGION)
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Two Vatican aids carry a kneeler as Pope Benedict XVI celebrates Christmas Mass in St. Peter's Basilica at the Vatican, Friday, Dec. 24, 2010. (AP Photo/Andrew Medichini)
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