A very Vatican Christmas: Pope Francis celebrates one of Catholicism's holiest days

Pope Francis delivers his "Urbi et Orbi" (to the city and to the world) blessing from the central balcony of St. Peter's Basilica at the Vatican, Friday, Dec. 25, 2015. (AP Photo/Gregorio Borgia)

Pope Francis delivers his "Urbi et Orbi" (to the city and to the world) blessing from the central balcony of St. Peter's Basilica at the Vatican, Friday, Dec. 25, 2015. (AP Photo/Gregorio Borgia)

Pope Francis delivers his "Urbi et Orbi" (to the city and to the world) blessing from the central balcony of St. Peter's Basilica at the Vatican, Friday, Dec. 25, 2015. Pope Francis is praying that recent U.N.-backed peace agreements for Syria and Libya will quickly end the suffering of their people while praising the generosity of those countries that have taken their refugees in. (L'Osservatore Romano/Pool Photo via AP)

Pope Francis delivers his "Urbi et Orbi" (to the city and to the world) blessing from the central balcony of St. Peter's Basilica at the Vatican, Friday, Dec. 25, 2015. Pope Francis is praying that recent U.N.-backed peace agreements for Syria and Libya will quickly end the suffering of their people while praising the generosity of those countries that have taken their refugees in. (L'Osservatore Romano/Pool Photo via AP)

Pope Francis delivers his "Urbi et Orbi" (to the city and to the world) blessing from the central balcony of St. Peter's Basilica at the Vatican, Friday, Dec. 25, 2015. Pope Francis is praying that recent U.N.-backed peace agreements for Syria and Libya will quickly end the suffering of their people while praising the generosity of those countries that have taken their refugees in. (L'Osservatore Romano/Pool Photo via AP)

Pope Francis kisses a statue of Baby Jesus as he celebrates the Christmas Eve Mass in St. Peter's Basilica at the Vatican, Thursday, Dec. 24, 2015. (AP Photo/Gregorio Borgia)

Pope Francis uncovers a statue of Baby Jesus as he celebrates the Christmas Eve Mass in St. Peter's Basilica at the Vatican, Thursday, Dec. 24, 2015. (AP Photo/Gregorio Borgia)

Two Swiss Guards stand in St. Peter's Square at the Vatican, Friday, Dec. 25, 2015. Pope Francis has issued a Christmas Day indulgence for Catholics around the globe in hopes they spread the churchâs message of mercy in a world torn by âmurderous evil,â war and poverty. Speaking from the loggia of St. Peterâs Basilica on Friday, Francis said he hoped the indulgence would encourage the faithful in his Holy Year of Mercy âto welcome Godâs mercy in our lives, and be merciful with our brothers to make peace grow.â (AP Photo/Gregorio Borgia)

Pope Francis incenses a statue of Baby Jesus as he celebrates the Christmas Eve Mass in St. Peter's Basilica at the Vatican, Thursday, Dec. 24, 2015. (AP Photo/Gregorio Borgia)

Pope Francis holds a statue of Baby Jesus as he leaves at the end of the Christmas Eve Mass in St. Peter's Basilica at the Vatican, Thursday, Dec. 24, 2015. (AP Photo/Gregorio Borgia)

Pope Francis delivers his "Urbi et Orbi" (to the city and to the world) blessing from the central balcony of St. Peter's Basilica at the Vatican, Friday, Dec. 25, 2015. Pope Francis is praying that recent U.N.-backed peace agreements for Syria and Libya will quickly end the suffering of their people while praising the generosity of those countries that have taken their refugees in. (L'Osservatore Romano/Pool Photo via AP)

Pope Francis delivers his "Urbi et Orbi" (to the city and to the world) blessing from the central balcony of St. Peter's Basilica at the Vatican, Friday, Dec. 25, 2015. Pope Francis is praying that recent U.N.-backed peace agreements for Syria and Libya will quickly end the suffering of their people while praising the generosity of those countries that have taken their refugees in. (L'Osservatore Romano/Pool Photo via AP)

Pope Francis kisses a statue of Baby Jesus as he celebrates the Christmas Eve Mass in St. Peter's Basilica at the Vatican, Thursday, Dec. 24, 2015. (AP Photo/Gregorio Borgia)

Children look at at a statue of Baby Jesus as Pope Francis celebrates the Christmas Eve Mass in St. Peter's Basilica at the Vatican, Thursday, Dec. 24, 2015. (AP Photo/Gregorio Borgia)

Pope Francis delivers his "Urbi et Orbi" (to the city and to the world) blessing from the central balcony of St. Peter's Basilica at the Vatican, Friday, Dec. 25, 2015. Pope Francis is praying that recent U.N.-backed peace agreements for Syria and Libya will quickly end the suffering of their people while praising the generosity of those countries that have taken their refugees in. (L'Osservatore Romano/Pool Photo via AP)