Who in the following groups may receive Holy Communion in a Catholic Church?

  • Among Catholics. (cf. the current debate on communion for divorced-and-remarried Catholics).
  • Among non-Catholic Christians.
  • Among non-Christians (= non-baptized persons).

Please provide the supporting Church teaching, guidelines and reasoning, including any scriptural basis.

Related: As a protestant, may I participate in the Eucharist (Communion) when visiting a Catholic church?

  • 1
    What about Christians who haven't been baptised? :P
    – curiousdannii
    Oct 8, 2014 at 3:57
  • @curiousdannii For the purpose of this question they are among non-Christians (= non-baptized persons).
    – user13992
    Oct 8, 2014 at 4:30

2 Answers 2



The main requirement for a Catholic who has received First Communion is that the person must be in a state of grace (the person has been to confession since committing a mortal sin). As for divorced and remarried persons, non-marital intercourse is a mortal sin and divorces are not recognized by the Catholic Church so...

The person must also believe in the doctrine of transubstantiation. This is one of the major differences in Communion between the Catholic Church and Protestant churches, and the words used in the Communion Rite reflect it (the Eucharistic minister declares "The Body of Christ" as the host is given, and the person receiving it answers with an affirmative "Amen").

The person also must have observed the Eucharistic fast (only water and medicine within an hour before Communion).

Another important requirement that almost goes without saying is that the person must not be under an ecclesiastical censure (e.g. excommunicated). This might also apply to a divorced and remarried person.

Catholic children are admitted to Communion once they have received their First Communion.

Non-Catholic Christians

The person may be allowed to receive Communion depending on the Christian denomination the person belongs to. In the missals at a Catholic Church you will find a message like this one:

We welcome our fellow Christians to this celebration of the Eucharist as our brothers and sisters. We pray that our common baptism and the action of the Holy Spirit in this Eucharist will draw us closer to one another and begin to dispel the sad divisions which separate us. We pray that these will lessen and finally disappear, in keeping with Christ's prayer for us 'that they may all be one'. Because Catholics believe that the celebration of the Eucharist is a sign of the reality of the oneness of faith, life, and worship, members of those churches with whom we are not yet fully united are ordinarily not admitted to Communion. Eucharistic sharing in exceptional circumstances by other Christians requires permission according to the directives of the diocesan bishop and the provisions of canon law...

If the Christian belongs to a denomination that the Catholic Church is considered "fully united" with then that Christian will be admitted to Communion. Otherwise, the person is generally not admitted, although there are exceptions. The Guidelines for the Reception of Communion from the United States Conference of Catholic Bishops (USCCB) provides a list of the denominations whose members are permitted to receive Communion:

Members of the Orthodox Churches, the Assyrian Church of the East, and the Polish National Catholic Church are urged to respect the discipline of their own Churches. According to Roman Catholic discipline, the Code of Canon Law does not object to the reception of communion by Christians of these Churches (canon 844 § 3)


Non-Christians are not admitted to Communion.

The message in the missals from above continues:

We also welcome to this celebration those who do not share our faith in Jesus Christ. While we cannot admit them to Communion, we ask them to offer their prayers for the peace and the unity of the human family.

Scriptural Basis

The scriptural basis for the Catholic Church's teaching is mainly based on 1 Corinthians 11:27-29:

So then, whoever eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty of sinning against the body and blood of the Lord. Everyone ought to examine themselves before they eat of the bread and drink from the cup. For those who eat and drink without discerning the body of Christ eat and drink judgment on themselves.

Clearly, these verses indicate that Catholics must be in a state of grace when receiving Communion. Also, non-Christians do not acknowledge Christ as Lord and would therefore receive it in an unworthy manner. Similarly, non-Catholic Christians who do not believe in transubstantiation would receive Communion in an unworthy manner according to Catholic teaching.

You can find more details, including exceptions, at Catholic Answers and the USCCB Guidelines for the Reception of Communion. The above missal quotes are derived from the USCCB guidelines.

  • Do you have citations for the first section? In particular, I'm curious where the list of required beliefs comes from.
    – galdre
    Oct 8, 2014 at 2:45
  • @galdre I found the USCCB Guidelines on the requirements and added it to my answer. That link as well as the Catholic Answers link I originally included are my sources for all three sections.
    – Null
    Oct 8, 2014 at 3:28
  • The USCCB Guidelines don't mention belief in transubstantiation, nor does the Catholic Answers tract cite any church documents on that point (instead, they make am argument from Scripture). Further googling leads me only to a website arguing that being without mortal sin implies belief in transubstantiation. So, I am not sure it belongs in the answer. The Catholic Church tends to come down pretty hard on denial of her doctrines, but rarely on lack of belief alone.
    – galdre
    Oct 9, 2014 at 1:33
  • @Null Divorce and remarriage does not impose an ecclesiastical censure on the parties in question. However, divorce does not dissolve marriage, and attempting a remarriage while being married to someone else is an objectively immoral act. Someone who manifestly (i.e., publicly) and habitually does something gravely immoral should not be admitted to Communion, until he has ceased his actions and has sought reconciliation. Apr 1, 2015 at 10:13
  • @galdre The USCCB document depends on Canon 844 which indicates a reciprocity between certain groups "judged by the Apostolic See" to be in a similar state to the Catholic Church as the Catholic Church is to Eastern Churches; the canon refers to 3 sacraments including communion which Catholics can approach Eastern ministers if necessary. The key is that it restricts to those who have valid sacraments, thus only those groups who have valid sacraments may receive from Catholic ministers.
    – eques
    Aug 4, 2016 at 22:20

Pope Pius VIII, Traditi Humilitati (# 4), May 24, 1829: “Jerome used to say it this way: he who eats the Lamb outside this house will perish as did those during the flood who were not with Noah in the ark.”

Pope Gregory XVI, Commissum divinitus (# 11), May 17, 1835: “… whoever dares to depart from the unity of Peter might understand that he no longer shares in the divine mystery…‘Whoever eats the Lamb outside of this house is unholy.’”

Pope Pius IX, Amantissimus (# 3), April 8, 1862: “… whoever eats of the Lamb and is not a member of the Church, has profaned.”

  • 4
    Please explain the relevance of this quote more explicitly.
    – curiousdannii
    Oct 8, 2014 at 3:59

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