(a) Canons 886 and 905 allow the faithful to receive communion and absolution according to a Rite different from their own, so that one who belongs to the Latin Rite may lawfully receive in Communion a Host consecrated according to the Greek Rite, or go to confession to an Oriental priest. But in these Canons there is question of different Rites within the Catholic Church, not of those of non-Catholics.
(b) Canons 742 and 882 allow those who are in danger of death to receive Baptism and absolution from an heretical or schismatical minister, and theologians apply the same principle to Extreme Unction and the Viaticum. But there is no communication in non-Catholic ceremonies in these cases, for the Sacraments belong to the Catholic Church, and for the sake of the dying she authorizes non-Catholic ministers to act as her representatives, provided there is no scandal or danger of perversion.
971. Cases of participation in non-sacramental rites are as follows:
(a) Oaths and Vows.—Participation is active when one swears in words or by other signs which, according to local usage, manifest belief in the creed of some sect; it is not active, when the manner of the oath does not signify adherence to a false creed; Example: If one is required to swear, by touching or kissing the non-Catholic Bible, as a sign of approval of Protestantism or Masonry, one may not consent. But, if the Government presents a non-Catholic Bible with no thought of Protestantism, there is no approval of Protestantism in the one who swears on that Bible, although, if the custom is not general, there might be scandal if no protest were made. A Catholic may bring his own Bible with him, or ask for a copy of the Catholic Bible.
(b) Services—Participation is active when one marches in an Anglican procession, plays the organ or sings at Y.M.C.A. services, joins in the prayers or responses offered in a Protestant church, etc. (Holy Office, July 6, 1889). Participation is passive if one looks on during a rare visit, or listens by radio to the musical program broadcast from Protestant services, or if one is obliged to attend non-Catholic services habitually, not as a profession of faith, but as a matter of civil duty or of domestic discipline, as happens with soldiers or with inmates of public institutions. Participation is not active if one adores the Blessed Sacrament carried in a schismatical procession which one meets by chance and unavoidably. Examples: Titus belongs to the honorary guard of a state ruler, and has to accompany the latter to non-Catholic services on certain state occasions. Balbus is tutor in a non-Catholic family, and is expected to take his charges to their church and back home on Sundays. Claudia is a maid in a non-Catholic family, and is ordered to hold one of the children while it is being baptized by the non-Catholic minister. In all these cases the presence at the services is purely passive, since the intention of the Catholic present is not to perform any religious duty, but only some civil or domestic service (see IV Kings, v. 18). But, on the other hand, the martyrs during the reigns of Elizabeth and her successors refused to attend the Anglican services, because this was required by law as a sign of conformity to the Established Church—that is, an active presence was prescribed.
972. Cases of participation in religious places, times and objects are as follows:
(a) Places.—Participation is active when one orders one’s body to be buried in a sectarian graveyard, when one enters a schismatical or heretical church privately in order to visit the Blessed Sacrament or pray, when one offers up Catholic services in a non-Catholic temple, if these things are looked upon by the public as indications of identity of belief between Catholics and non-Catholics. Participation is merely passive, if one visits non-Catholic places of worship out of curiosity in order to look at the pictures, hear the music or listen to or take part in a political lecture or debate. In case of necessity, the Church permits Catholic services to be performed in the same building as that wherein non-Catholic rites are held, e.g., the Church of the Holy Sepulchre at Jerusalem which is used by various denominations (Holy Office, 12 April, 1704).
(b) Times.—Participation is active if one observes new moons, sabbaths, and days of fast as prescribed in the Old Law.
(c) Objects.—Participation is active if one wears the uniform of a condemned society, the ring or other emblem of Freemasonry, etc., or makes use of other insignia whose sole purpose is to indicate membership in some sect, unless it be evident that these are used for some other purpose (e.g., in order to act a certain part in a play).
973. Cases of participation through attendance at non-Catholic religious instructions are as follows: