APOSTOLIC EXHORTATION
FAMILIARIS CONSORTIO
OF POPE
JOHN PAUL II
TO THE EPISCOPATE
TO THE CLERGY AND TO THE FAITHFUL
OF THE WHOLE CATHOLIC CHURCH
ON THE ROLE
OF THE CHRISTIAN FAMILY
IN THE MODERN WORLD
http://w2.vatican.va/content/john-paul-ii/en/apost_exhortations/documents/hf_jp-ii_exh_19811122_familiaris-consortio.html
"However, the Church reaffirms her practice, which is based upon Sacred Scripture, of not admitting to Eucharistic Communion divorced persons who have remarried. They are unable to be admitted thereto from the fact that their state and condition of life objectively contradict that union of love between Christ and the Church which is signified and effected by the Eucharist. Besides this, there is another special pastoral reason: if these people were admitted to the Eucharist, the faithful would be led into error and confusion regarding the Church's teaching about the indissolubility of marriage.Reconciliation in the sacrament of Penance which would open the way to the Eucharist, can only be granted to those who, repenting of having broken the sign of the Covenant and of fidelity to Christ, are sincerely ready to undertake a way of life that is no longer in contradiction to the indissolubility of marriage. This means, in practice, that when, for serious reasons, such as for example the children's upbringing, a man and a woman cannot satisfy the obligation to separate, they "take on themselves the duty to live in complete continence, that is, by abstinence from the acts proper to married couples."(180)
Similarly, the respect due to the sacrament of Matrimony, to the couples themselves and their families, and also to the community of the faithful, forbids any pastor, for whatever reason or pretext even of a pastoral nature, to perform ceremonies of any kind for divorced people who remarry. Such ceremonies would give the impression of the celebration of a new sacramentally valid marriage, and would thus lead people into error concerning the indissolubility of a validly contracted marriage.
By acting in this way, the Church professes her own fidelity to Christ and to His truth. "
- APOSTOLIC EXHORTATION FAMILIARIS CONSORTIO OF POPE
JOHN PAUL II, 1981