My adult daughters and I have talked about how difficult it will be to see the portrayal of such suffering, yet knowing that it does depict reality.
Judging by your account, I can assume it will be as difficult as we imagine. However, I trust that the horror will touch us as it touched you.
All Christians know that the perfect and sinless lamb of God, Jesus, suffered and died for imperfect and sinful us. The visual may be hard to withstand, but the message knows no equal. We should think of it every day and then celebrate the gift of the Resurrection and the life everlasting.
This is the second article I've seen written by a pastor, and even with all of the time they have spent talking, living, and breathing the story of Jesus, they have had a difficult time dealing with the feelings the movie has evoked.
I've taken from other threads that many people believe this movie will have conversion value, but it is impossible to know what effect this film will have on people without formal religious training, or even anything other than a distant Sunday school set of ideas about Christianity. It may not have the effect that many here on FR think that it will.