The event has also drawn some criticism.

The Rev. Paul Brandeis Raushenbush, CEO of the Interfaith Alliance, argued it promoted a narrow view of American religious identity.

“This is an opportunity for America to celebrate the diversity that is our religious heritage,” Raushenbush told NBC News on Sunday. “Unfortunately, what we’re seeing with Rededicate is actually an effort to betray that heritage that we have and instead say there is one tradition that really matters, and that is the one that they’re going to be celebrating.”

Hermon Barbe and his son drove from Michigan to participate in the event Sunday.Zackary Canepari for NBC News

President Donald Trump and his administration have increasingly embraced overt symbols of religion in public life, including Oval Office prayer circles, the Justice Department’s task force on anti-Christian bias and a since-deleted post on Trump’s social media page that depicted him as a Christ-like savior. (Trump said he thought it showed him as a doctor.)

The event was hosted by Freedom 250, a Trump-backed public-private organization planning a series of events this summer ahead of the nation’s 250th anniversary.