Christian tradition can name at least seven reasons for fasting:
- From the beginning, God commanded some fasting, and sin entered into the world
because Adam and Eve broke the fast.
- For the Christian, fasting is ultimately about fasting from sin.
- Fasting reveals our dependence on God and not the resources of this world.
- Fasting is an ancient way of preparing for the Eucharist—the truest of foods.
- Fasting is preparation for baptism (and all the sacraments)—for the reception of grace.
- Fasting is a means of saving resources to give to the poor.
- Fasting is a means of self-discipline, chastity, and the restraining of the appetites.
Code of Canon Law
CHAPTER II Days of Penance
Can. 1249 The divine law binds all the Christian faithful to do penance each in his or her own way. In order for all to be united among themselves by some common observance of penance, however, penitential days are prescribed on which the Christian faithful devote themselves in a special way to prayer, perform works of piety and charity, and deny themselves by fulfilling their own obligations more faithfully and especially by observing fast and abstinence, according to the norm of the following canons.
Can. 1250 The penitential days and times in the universal Church are every Friday of the whole year and the season of Lent.
Can. 1251 Abstinence from meat, or from some other food as determined by the Episcopal Conference, is to be observed on all Fridays, unless a solemnity should fall on a Friday. Abstinence and fasting are to be observed on Ash Wednesday and Good Friday.
Can. 1252 The law of abstinence binds those who have completed their fourteenth year. The law of fasting binds those who have attained their majority, until the beginning of their sixtieth year. Pastors of souls and parents are to ensure that even those who by reason of their age are not bound by the law of fasting and abstinence, are taught the true meaning of penance.
? Questions and Answers about Lent and Lenten Practices (Click to view)
- from the United States Conference of Catholic Bishops