As Christian films slump at the box office, studios seek new ways to attract the faithful

In late February, actor Dennis Quaid joined religious rock group MercyMe at a Dallas concert to sing — and promote his new movie. The band has toured for much of the last year in support of the new film “I Can Only Imagine,” which tells the story of how lead singer Bart Millard wrote the bestselling…

In late February, actor Dennis Quaid joined religious rock group MercyMe at a Dallas concert to sing — and promote his new movie. The band has toured for much of the last year in support of the new film “I Can Only Imagine,” which tells the story of how lead singer Bart Millard wrote the bestselling...