In the center aisle, in place of the baptismal fountain, candle-lit stands bore three books: a Bible, a Torah and a Koran. When a visitor asked a nearby usher what to do, the usher replied: "This is a totally different service than what we usually do. There's no wrong answer."

Imam Khalifa El-Krif from the Islamic Center in Washington performs a muslim call to prayer in an interfaith service aimed at combating anti-muslim bigotry held at The National Cathedral in Washington on June 27.

Instead of Communion, the service featured readings from each of the three Abrahamic faiths, part of a project to promote religious tolerance through similar interfaith services at about 70 churches nationwide. The effort aimed to counteract negative stereotypes and hostile rhetoric targeting American Muslims in the past year, notably the controversy about plans for an Islamic center near Ground Zero in New York and the burning of a Koran by the Rev. Terry Jones in March in Florida.

"For nearly a decade now, since the attacks of Sept. 11, 2001, we Americans have known without a doubt that any hope for a peaceful world will require profound engagement among the world's religions," cathedral Dean Samuel T. Lloyd III said.

The service began with a traditional call to prayer in the three religions' terminology - a Hebrew "Bar'chu," an Arabic "Azan" and a Latin "Spiritus Domini" - all sung in ethereal tones that swirled through the cathedral's soaring nave.

Then Rabbi Amy M. Schwartzman of Temple Rodef Shalom in Falls Church read a passage from Deuteronomy about showing kindness to strangers. Imam Mohamed Magid, the president of the Islamic Society of North America, chanted a passage from the Koran about the value of diversity.

"God could have made all of us look the same and go to the same temple or same church," Magid explained. "But God willed that humans are diverse."

Gaddy said he hoped the readings would underscore the commonalities among the three traditions, especially their shared message of tolerance and compassion.

"No one verse or one passage in any book of scripture should be allowed to hijack or hold hostage the central truth, the overarching as well as pervasive moral mandate, which emerges from the full sweep of truth in those books of scripture," he said. "Cherry picking isolated texts ... allows mean-spirited people to turn the scripture of our religions into weapons."

Almost 1,000 people attended the service, an average turnout for a summer Sunday. Among them were people actively involved in interfaith dialogue groups, as well as those who were surprised to find the Jewish and Muslim elements of the service.

Ken Bagley, who with his family was visiting the District from Connecticut, just happened upon Sunday's service.

"It was a neat opportunity to hear all three perspectives in one service and to see how alike they are. You too often hear about how different," Bagley said.

Alex Huddell, a 21-year-old student at American University, said she had never heard the Koran chanted, except "maybe in movies."

"It was interesting and beautiful to listen, even if you didn't understand, to the different rhythms and styles," Huddell said. "I'm Christian, but I feel a lot of embarrassment about the way Christians sometimes marginalize other religions. So it's nice to hear there are some leaders in the faith community who are trying to promote the same message of acceptance."

Pete Carlson, a member of the cathedral's congregation, said he was inspired by the service and hopes to attend more interfaith events.

"It was even more moving than the normal service here on Sunday," Carlson said. "It felt like we were a part of something much bigger and much older."

Lloyd, the cathedral's dean, said a Muslim reading also will be part of the cathedral's memorial service for the 10th anniversary of the Sept. 11 terrorist attacks.