Origin of the festivity of the Christmas 

« One presented to them the Angel of the Gentleman and the God's Glory wrapped the shepherds with his light and they filled with fear. The angel said to them: " Do not be Afraid, since I announce to you a big happiness, there you has been born today, in David's city, a Salvador, which is Christ Señor; and this will serve you as sign: you will find a child wrapped in nappies and put to bed in a manger ". Suddenly, together with the angel a multitude of the celestial army, who was praising God, saying: " Glory to God in the heights and in the ground Peace to the men in whom He takes pleasure ". ». (Lucas)
Christmas night is eve of the Christmas Day. It is one I nonhave of familiar meeting. According to the customs of every country, the familiar holidays change. The catholic communities celebrate to midnight the Mass of Rooster, call like that because according to the legends a rooster was the first one in attending the birth of Jesús and the manager of announcing it to the entire world.
« And in those days, getting up Maria, it went hastily to the mountain, to a city of Judá, and entered house of Zacarías, and greeted Isabel. And it happened that when Isabel heard Maria's greeting, the creature gave jumps in the belly. And she was full Isabel del Espíritu Santo. And it exclaimed aloud and said: " Blessed you between the women and blessed the fruit of your belly. And wherefrom this to me, which the Mother of my Gentleman avenges to me? Because am here then that the voice of the greeting came to my ears, the creature gave jumps of pleasure in my belly. And bienaventurada that creíste, because compliment will be what was said on behalf of the Gentleman ". » (Lucas)
Christmas comes from " nativity " or "nativitas" that means birthday, birth. It is one of the most important Christian holidays, since he commemorates the birth of Jesus Christ, the Messiah. It is celebrated on December 25 in the catholic and Protestant community and January 7 in the orthodox community.
San Francisco of Asís, a catholic Franciscan, was who initiated the tradition of representing the Bethlehem, manger of the birth, with allusive figures to Virgin Mary, San Jose and Little Baby Jesus accompanied of a mule and an ox.