Yes. Its part of the Doctrine of the Communion of Saints. It means that when we commit sin, we injure the Body of Christ.
960 The Church is a “communion of saints”: this expression refers first to the “holy things” ( sancta ), above all the Eucharist, by which “the unity of believers, who form one body in Christ, is both represented and brought about” ( LG 3).
953Communion in charity . In the sanctorum communio, “None of us lives to himself, and none of us dies to himself.” “If one member suffers, all suffer together; if one member is honored, all rejoice together. Now you are the body of Christ and individually members of it.” “Charity does not insist on its own way.” In this solidarity with all men, living or dead, which is founded on the communion of saints, the least of our acts done in charity redounds to the profit of all. Every sin harms this communion.
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