Trying very hard to think of how they're going to make the Resurrection some shocking narrative. I mean, it's not what you'd call an action-packed event.
Passion's appeal was its brutality and the idea that Christians had to see it to fully understand Christ's sacrifice. Churches bused their congregations to theaters to see it. And a lot of moviegoers were simply curious about it. A PG-rated rerelease that purged most of the gore was a box-office dud, nobody wanted to see it without the horrific violence.
Now, if Gibson wanted to do a movie about the founding of the Church, he'd have lots of material, as the original founders were persecuted, tortured, executed, etc. But the Resurrection by itself doesn't seem to offer a whole lot in the way of potentially "shocking" material.