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Andrea Kordorican wrote:

Hi, guys —

  • Is breaking a vow a mortal sin?
  • Can I receive Holy Communion if I break a vow?

Andrea

  { Is breaking a vow a mortal sin and can I receive Holy Communion if I break a vow? }

Eric replied:

Andrea,

It depends on the vow, whether it was public or private. Breaking a public vow such as a marriage vow or a religious vow is extremely serious. Breaking a vow made privately to God in prayer may be less serious.

Let's look at the definition of a vow according to Canon Law:

Canon 1191 §1. A vow, that is, a deliberate and free promise made to God about a possible and better good, must be fulfilled by reason of the virtue of religion.
  • So the first thing I'd consider, is, is the vow about a possible and better good?

If it's not about a better good, then it's not a vow. Vows made out of grave and unjust fear or malice are also null and void.

Without additional details, I'd have to recommend discussing it with and confessing it to a priest in Confession.

Eric

Andrea replied:

Eric,

I forgot to say one prayer I promised God.

  • Can I receive Holy Communion?

Andrea

Eric replied:

Andrea,

You cannot commit a mortal sin by forgetting something; a mortal sin must be done deliberately, intentionally, and knowingly.

I don't even think promising to pray a prayer even counts as a vow in the canonical sense so, yes, you can receive Holy Communion.

Eric

Andrea replied:


No I didn't promise.

I vowed to say some prayers every day and I forgot to say one.

  • What is the difference between a vow and a promise?

I have read Canon Law but I don't understand it.

Sorry for taking your time!

God bless you and your family!

Andrea

Eric replied:

Andrea,

A vow is a promise made to God.

"The omission of one or two Masses or one or two Rosaries is not a grave matter in the case of a vow to be present at Mass or to say the Rosary every day. Every mortal sin is a grave offense against a vow to do what is most perfect; it is not the same with venial sin, even when deliberate; there must be a habit of committing acts which are certainly imperfect, in order to constitute a grave sin against this vow."

Vermeersch, Arthur, "Vows," ed. by Charles G. Herbermann, Edward A. Pace, Condé B. Pallen, Thomas J. Shahan, and John J. Wynne, The Catholic Encyclopedia: An International Work of Reference on the Constitution, Doctrine, Discipline, and History of the Catholic Church (New York: The Encyclopedia Press; The Universal Knowledge Foundation, 1907–1913)

Eric
[Related Catechism paragraphs.]

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