The film, Paul: The Apostle of Christ (2018), carries great weight theologically in that Paul describes a very particular kind of love that Jesus preaches and lives out in the Gospels. In so doing, the film shows an overlooked criterion by which people who claim to be Christian can be ascertained as such or not. One implication from the film is that Christianity has contained (and still contains) a number of nominal Christians who are not in fact Christian. A related implication is that the historically (and modern) criteria by which people are considered (and consider themselves) Christian is not as useful (and valid) as the overlooked criterion that is so salient in the film.
The full essay is at "Paul: The Apostle of Christ"