In the Roman Catholic Church and other Christian churches of the West, the several weeks prior to Christmas are known as Advent, a name from a Latin word meaning "coming." It happens that the beginning of Advent always falls on the Sunday closest to November 30, the ancient feast day (in both East and West) of the Apostle Andrew. Among Christians in the West, this preparatory season, which tends to be slightly less rigorous than Lent and often involves no special fasting at all, always begins on the fourth Sunday before Christmas. Thus, from year to year it will vary in length between 3 and 4 weeks, but always with four Sundays.
The observance of the season of Advent is fairly late. One finds no sermons for Advent, for instance, among the liturgical homilies of St. Leo the Great in the mid-fifth century. About that time, however, the season was already was already emerging in Spain and Gaul. A thousand years later, the time of the Reformation, Advent was preserved among the liturgical customs of the Anglicans and Lutherans; in more recent years, other Protestant groups have informally begun to restore it, pretty much as it had originally started--one congregation at a time.
In the Eastern Orthodox Church, the corresponding penitential season of preparation for Christmas always begins on November 15, the day after the Feast of the Apostle Philip. For this reason it is popularly known as St. Philip's Fast. A simple count of the days between November 15 and December 25 shows that this special period lasts exactly 40 days, the same as Lent.
More recently Christians of the Orthodox Church have begun to call this season by its Latin name, "Advent." One now finds the term standard in publications of the Antiochian Archdiocese, for instance. The adoption of the word "Advent" by Eastern Orthodox Christians is inspired by the same reason that prompted the adoption of other Latin theological terms, such "Sacraments," "Incarnation," and "Trinity." Very simply, these are the recognizable theological terms that have passed into Western languages. They also happen to be theologically accurate! If the Christian West can adopt Greek terms like "Christology," it seems only fair for the Christian East to adopt Latin terms like "Incarnation."
(On the other hand, one finds some Orthodox Christians, especially among recent, hyperactive converts from Western churches, who resist the adoption of the word "Advent," preferring to speak of "Winter Lent" or some such anomaly. One is hard pressed to explain this eccentric, lamentable preference for Anglo-Saxon over Latin on a point of theology.)
Several other features of Advent deserve some comment:
All of these festive things are part of the celebration of Christmas itself, which lasts the 12 days from December 25 to January 6.
The seasons of the liturgical year involve more than liturgical services. The liturgical seasons is supposed to govern the lives of those who observe them. For this reason, anticipating these properly Christmas activities during Advent considerably lessens the chance of our being properly prepared, by repentance, for the grace of that greater season; it also heightens the likelihood that we will fall prey to the worldly spirit that the commercial world would encourage during this time.
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