Biyernes, Marso 7, 2025
Eating Meat on a Friday is a Mortal Sin

Laws of Fast and Abstinence Bind Mortally

To ignore the law of fasting or abstinence from meat is a grave sin. Why? Because it is an act of disobedience to God's Church. We do not abstain from meat on Fridays for instance because the meat is unclean or evil. It is the act of disobedience that is evil. As Fr. Michael Müller remarks in his Familiar Explanation of Christian Doctrine from 1874: "It is not the food, but the disobedience that defiles a man."

To eat meat on a forbidden day unintentionally, for instance, is no sin. As the Scriptures affirm it is not what goes into one's mouth that defiles a man but that disobedience which comes from the soul (cf. Matthew 15:11). But to eat meat on a Friday or to refuse the law of fasting on required days is a serious sin because of disobedience.

To ignore the law of Friday abstinence is a mortal sin and not merely a venial sin. This was made clear by both Pope Innocent III in the 13th century and Pope Alexander VII in the 17th century who both assert that to violate the law of abstinence on a required day is a mortal sin. The Catholic Encyclopedia explains this rationale:

The Church enjoins the ways and means whereby her subjects must satisfy the obligation of doing penance inculcated by natural law. Many of the Fathers allude to the exercise of ecclesiastical authority in reference to the obligation of abstinence. The disciplinary canons of various councils bear witness to the actual exercise of authority in the same direction. Texts of theology and catechisms of Christian doctrine indicate that the obligation of abstaining forms an element in one of the Commandments of the Church. Satisfaction for sin is an item of primary importance in the moral order. Naturally enough, abstinence contributes no small share towards the realization of this end. As a consequence, the law of abstinence embodies a serious obligation whose transgression, objectively considered, ordinarily involves a mortal sin. The unanimous verdict of theologians, the constant practice of the faithful, and the mind of the Church place this point beyond cavil. They who would fain minimize the character of this obligation so as to relegate all transgressions, save such as originate in contempt, to the category of venial sin are anathematized by Alexander VII [Cf. Prop. 23, ap. Bucceroni, Enchiridion Morale, 145 (Rome, 1905)]. 

In fine, the Trullan synod (can. 58, ap. Hefele, ‘History of the Councils of the Church’, V, 231, Edinburgh, 1896) inflicts deposition on clerics and excommunication on laymen who violate this law. Furthermore, theologians claim that a grievous sin is committed as often as flesh meat is consumed in any quantity on abstinence days (Sporer, Theologia Moralis super Decalogum, I, De observ. jejunii, # 2, assert. II), because the law is negative, and binds semper et pro semper. 

If you cannot resist having meat on Friday, how can you possibly resist more insidious assaults from the devil? The same can be said for a day of fasting – if you cannot refuse food for a short time, how can you reject serious temptations against purity, humility, or pride?

Want to learn more about the history of fasting and abstinence? Check out the Definitive Guide to Catholic Fasting and Abstinence.

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