Published: Dec 24, 2013 4:10 PM EST

VATICAN CITY (AP) - Pope Francis has begun celebrating his first Christmas Eve Mass as pontiff by placing a baby Jesus statue in a replica of a manger in St. Peter's Basilica.
    
Francis, who turned 77 a week ago, walked briskly up the main aisle of the basilica, which was packed with faithful and tourists at the start of Mass, which began Tuesday 2 ½ hours before midnight. Keeping with the theme of humility he has set for his new papacy, Francis carried the statue instead of an aide, and kissed a knee of the figure of the newly born Jesus.
    
The ceremony is the pope's only public Mass for Christmas. On Wednesday, Christmas Day, Francis will deliver his Christmas message, meant for the world, from the basilica's central balcony overlooking St. Peter's Square.

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