Rev. James D. Conley, D.D., S.T.L. | Diocese of Lincoln website

A recent inquiry to the Register addressed whether a devout Catholic can attend a Lutheran worship service with a friend without committing a sin. The response highlighted the complexities of ecumenism, emphasizing the balance between striving for Christian unity and maintaining Catholic beliefs.

The answer explained that Catholics are allowed to participate in non-Catholic services, including Lutheran ones, as long as certain conditions are met. "Attending a non-Catholic worship service is not in and of itself a sin," it stated. However, attending such services does not fulfill the obligation to attend Sunday Mass. Catholics must still prioritize their own spiritual needs by attending Mass.

Additionally, Catholics should refrain from receiving bread and wine at Protestant services, as this act would suggest communion with those ecclesiastical communities. The text noted that "receiving bread and wine at a Protestant service is" considered sinful for Catholics because it implies unity that does not exist.

Catholics can participate in aspects of Protestant services such as psalms, responses, hymns, and other common actions. They need not adopt a disapproving demeanor during these events but should engage in parts of the service that celebrate God's Word or offer praise.

The response concluded by reiterating the delicate nature of ecumenism: "Unity cannot be at the expense of Truth, and Truth cannot bring unity without Charity." It encouraged all Christians to be instruments of truth and love in their interactions.