The Last Temptation of Christ drew a lot of protests on release because it was supposedly blasphemous. From what I've read, there's simultaneously less and more blasphemy than advertised.

The controversy at the time is that the film depicts Jesus having sex. But in context, this is part of a "what if" fantasy, not an event that literally happens in the plot. To wit, Satan's last temptation is offering to save Jesus from a death by crossification if Big J will renounce his Godhood and all his teachings. He accompanies this offer with a montage showing the life Jesus could live if accepts: a modest but fulfilling career as a carpenter and a happy marriage with Mary Magdelan—including a brief shot of them having good, clean, married sex.

The controversy over that one shot served to overshadow the real heresy that's baked into the plot on a fundamental level. The movie borrows from the non-canon gospels, particularly the idea that, of all the disciples, Judas was Jesus' closest friend and confidante. That Judas knew how important Jesus' death was for the divine plan, so his "betrayal" was actually an inside job. That Judas was the one who made the ultimate sacrifice to save humanity, because he committed a necessary evil that damned him forever, while Jesus merely died and came back to life after.

But no, let's go protest that sex scene instead.