Over the weekend, an unlikely candidate took home the box office crown. Low-budget faith-based film War Room, directed, written and produced by brothers Alex and Stephen Kendrick, took the title over summer blockbusters like Straight Outta Compton and Mission: Impossible - Rogue Nation.

"We prayed for this," Alex told ET. "So ultimately, God gets the credit."

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The brothers’ film, which showcases a couple who turns to prayer to save their troubled marriage, was filmed in North Carolina on a meager $3.5 million budget. In its second week at the box office, War Room beat out Straight Outta Compton to win the weekend with $9.35 million.

"We've been praying for two years for this film," Stephen told ET last week. "We were just on a prayer call in the airport a few minutes ago with our whole team, and we believe that what is happening with War Room is a huge answer to prayer."

It's the Kendricks' fifth film project, and the brothers are continuing to prove that faith-based films can succeed at the box office. Fireproof and Courageous, released in 2008 and 2011 respectively, both grossed over $30 million for the sibling duo.

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For War Room star T.C. Stallings, the film’s box office success was no surprise.

"I think that there’s an audience out there that wants to see this," he told ET’s Kevin Frazier. "I want my kids to be able to watch me. That’s what I’m after."

Stallings told ET that he had prayed years ago for the opportunity to work with the Kendrick brothers.

"I prayed and asked the Lord to give me a larger platform just so I can tell people about him," Stallings said. "And I know that’s happening."

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The film even has some famous fans already, as Jill Dillard and husband Derick went to see the movie with family members over the weekend, while the couple was back stateside for cousin Amy Duggar’s wedding.

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