n 1223, St. Francis of Assisi inaugurated a pious practice that in places today has become so common that many think that it always existed. This great saint, as he was traversing the rolling hills of central Italy one December to proclaim the Gospel, noticed that few of his countrymen were taking the mysteries of the faith seriously. Many were not preparing for Christmas at all. Of those who were getting ready to celebrate the Lord’s birth, they looked at it as an event tied exclusively to the past. The mysteries of the faith had become sterile. The central persons...