What Tony Blair’s former spin doctor Alastair Campbell said of New Labour – “We don’t do God” – applies also to the Academy Awards. The secular gong-dispensing rite annually sweeps religion off its proverbial red carpet. The last best picture winner to deal with the subject was 2015’s Spotlight, which hardly proselytised for organised religion – it dramatised the Boston Globe’s investigation into sexual abuse in the Catholic church. You have to go back to 1973 to find a movie with a priestly protagonist that really beguiled the Academy: William Friedkin’s horror movie The Exorcist received 10 Oscar nominations, winning...