Even non-Catholics could, under special circumstances, receive Communion with the permission of the bishop for example, if the person is dying and expresses faith in the Real Presence. In 1940 Brother Roger Schutz brought Protestants and Catholics together to establish a monastic community in Taize, France. That monastery has contributed a great deal to the ecumenical movement, but its monks do not practice intercommunion. Admitting and seeking to understand the painful differences that keep Catholics and non-Catholics apart in this matter may be today s best contribution to ecumenism. I do not know if the pope himself intends to sign it.
Justification is the teaching about how people are saved.
This teaching was probably the most basic difference between Roman Catholics and Martin Luther in the 16th century. The teaching of the Lutheran churches presented in this declaration does not fall under the condemnations from the Council of Trent. When the joint declaration was approved in June 1998, both sides identified issues needing resolution before the declaration could be accepted as an official statement for these Christians. But it is nevertheless the responsibility of the justified not to waste this grace but to live in it. You can be sure that the Congregation for the Doctrine of the Faith has very carefully carried out its responsibilities and would not have approved this new document if it compromised the Catholic faith.