Excommunication

Excommunication is an institutional act of religious censure used to deprive, suspend, or limit membership in a religious community or to restrict certain rights within it, in particular receiving of the sacraments. The term is often historically used to refer specifically to Catholic excommunications from the Catholic Church, but it is also used more generally to refer to similar types of institutional religious exclusionary practices and shunning among other religious groups. For instance, many Protestant denominations have similar practices of excusing congregants from church communities, while Jehovah's Witnesses, as well as the Churches of Christ, use the term "disfellowship" to refer to their form of excommunication.

The word excommunication means putting a specific individual or group out of communion. In some religions, excommunication includes spiritual condemnation of the member or group. Excommunication may involve banishment, shunning, and shaming, depending on the religion, the offense that caused excommunication, or the rules or norms of the religious community. The grave act is often revoked in response to sincere penance, which may be manifested through public recantation, sometimes through the Sacrament of Confession, piety, and/or through mortification of the flesh.

In Matthew 18:15-17 Jesus says that an offended person should first draw the offender's fault to the offender's attention privately; then, if the offender refuses to listen, bring one or two others, that there may be more than a single witness to the charge; next, if the offender still refuses to listen, bring the matter before the church, and if the offender refuses to listen to the church, treat the offender as "a Gentile and a tax collector".

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