It’s fitting that James Cameron’s “Avatar” arrived in theaters at Christmastime. Like the holiday season itself, the science fiction epic is a crass embodiment of capitalistic excess wrapped around a deeply felt religious message. It’s at once the blockbuster to end all blockbusters, and the Gospel According to James.

But not the Christian Gospel. Instead, “Avatar” is Cameron’s long apologia for pantheism  a faith that equates God with Nature, and calls humanity into religious communion with the natural world.

In Cameron’s sci-fi universe, this communion is embodied by the blue-skinned, enviably slender Na’Vi, an alien race whose idyllic existence on the planet Pandora is threatened by rapacious human invaders. The Na’Vi are saved by the movie’s hero, a turncoat Marine, but they’re also saved by their faith in Eywa, the “All Mother,” described variously as a network of energy and the sum total of every living thing.

If this narrative arc sounds familiar, that’s because pantheism has been Hollywood’s religion of choice for a generation now. It’s the truth that Kevin Costner discovered when he went dancing with wolves. It’s the metaphysic woven through Disney cartoons like “The Lion King” and “Pocahontas.” And it’s the dogma of George Lucas’s Jedi, whose mystical Force “surrounds us, penetrates us, and binds the galaxy together.”