Sometimes the issue flares up in a major religious denomination. Take, for example, the 2007 case of an Episcopal priest who declared, "I am both Muslim and Christian." She was eventually defrocked. Coverage of that story led to some interesting discussions here at GetReligion.

Quite some time ago, there was the case of a Missouri Synod Lutheran pastor who was disciplined for taking part in a post-Sept. 11 service that involved praying with Oprah Winfrey, as well as leaders from a wide spectrum of religious traditions, including Islam and Hinduism. 

Or maybe we're talking about a professor at a major evangelical Protestant school -- like Wheaton College -- who not only wore a hijab in support of oppressed Muslims, but took to social media to declare that she believes that Christians and Muslims worship the same God. She quoted the pope, when making that point.

These kinds of news reports loomed in the background during this week's "Crossroads" podcast (click here to tune that in), which focused on a recent Holy Week Mass in the Episcopal Diocese of Atlanta, during which the clergy renewed their ordination vows.

The bottom line: Stories about interfaith work and worship almost always raise complicated theological issues and, nine times out of 10, there are more than two camps of believers involved in the debates. Hold that thought.

Key details about the new Holy Week story: A Muslim interfaith leader preached during the rite, in the normal point in the liturgy dedicated to the sermon. A passage from the Quran was read, before the Gospel. The preacher stood with the bishop and others at the altar during the consecration prayers and she received the consecrated bread during Holy Communion.

All of this was discussed in my Universal syndicate "On Religion" column this week. Here is a sample of that column, which included material from contacts with Bishop Robert C. Wright, as well as the preacher, Soumaya Khalifah.