Excommunication and mortal sin


Can one be excommunicated for something that is not a mortal sin?


Excommunication is incurred for specific acts and they’re serious ones. Someone is excommunicated in order to make them realize what they’ve done and repent for it.

There’s a good explanation about excommunication at Catholic Exchange: catholicexchange.com/2008/01/25/81135/

Wikipedia lists various reasons for excommunication. (Wikipedia is not written by canon lawyers so keep that in mind.) The reasons they list include:

* an apostate from the faith, a heretic, or a schismatic;[7]
* a person who throws away the consecrated Eucharistic species or takes and retains them for a sacrilegious purpose;[8]
* a person who uses physical force against the Pope;[9]
* a priest who absolves an accomplice in a sin against the sixth commandment (the ban on adultery) except in danger of death;[10]
* a bishop who ordains someone a bishop without a pontifical mandate, and the person who receives the ordination from him;[11]
* a confessor who directly violates the sacramental seal of confession;[12]
* a person who procures a completed abortion;[13] and
* accomplices who are not named in a law prescribing latae sententiae excommunication but without whose assistance the violation of the law would not have been committed.[14]

Various other persons incur excommunication latae sententiae by papal decree, including:

* a person who violates the secrecy of a papal election, or who interferes with it by means such as simony;[15]
* a woman who is ordained as a priest or a bishop who ordains a woman as a priest.[16]

Some instances in which one incurs interdict latae sententiae include the following:

* using physical force against a bishop;[9]
* attempting to preside at Eucharist, or giving sacramental absolution, when not a priest;[10]
* falsely denouncing a confessor for soliciting a penitent to sin against the sixth commandment;[17] and
* a perpetually professed religious who attempts marriage.[18]




Could you provide a source please?


Canon law lists the offenses for which one can incur excommunication.

All of the offenses are mortal sins.


Excommunication offenses:

Ferendae Sententiae Excommunication:

Canon 1378: The pretended celebration of the Eucharist or of sacramental Confession
Canon 1388: Violation of the seal of Confession by an interpreter

Latae Sententiae Excommunication:

Canon 1364: Apostasy, heresy or schism
Canon 1367: Violation of the Sacred Species
Canon 1370: Laying violent hands on the Pope
Canon 1378: Absolution of an accomplice
Canon 1382: Episcopal consecration without authorization from the Holy See
Canon 1388: Violation of the seal of Confession by a confessor
Canon 1398: Procuring abortion


Oh thanks but I did not mean can someone be excommunicated for something that is not grave matter, I was more thinking of grave matter but without full knowledge.


Excommunication is for the specified mortal sins I listed. If someone does not know a sin is grave matter then they have not committed a mortal sin.


DISCLAIMER: The views and opinions expressed in these forums do not necessarily reflect those of Catholic Answers. For official apologetics resources please visit www.catholic.com.