A Roman Catholic official in Colorado, Peter Howard, resigned, apparently because he said that Catholics should not attend Protestant services. I don’t know about mere attendance, but his reasoning is right on:
Such “active participation” in a Protestant liturgical service, therefore, acts contrary to our faith which professes fundamentally different beliefs in critical ecclesiological and theological areas.
The only problem is with the phrase “Protestant liturgical service”; how many Protestant services could be described accurately with those words?
At least he takes the ecclesiological and theological differences seriously. It is amazing that we live in an age where someone is apparently forced to resign because of such clear-headed theological statements. I have no problem saying that “active participation” in non-Lutheran services is wrong.
How can real unity be achieved unless we are ready to acknowledge real, concrete, and important differences in doctrine and practice?