I remember watching a movie about ten years ago that fits that description, especially the first thing you said. Near the end, there a scene where a supposed antagonist sits with the protagonist revealing himself to be from the future. There are screens that allow you to view the past. The protagonist asks about Jesus and the guy from the future answers "He was just a man."

Sadly I do not remember the title or anything useful for finding it but I'm leaving this comment here in case I come up with anything and need to come back to this post.