Stars never touches the cross (or the resurrection) directly, even though Hazel and Augustus have vague conversations about God and the afterlife. On one hand it's a shame, given how profound it can be to have Christ with us in our suffering. Yet it also feels honest to where Hazel and Augustus are at and what they think they need. The abstractions of metaphysics and theology are no comfort in their final days; the tangible touch of a loved one is.
One of Hazel's key lines in the film is "some infinities are bigger than other infinities." It's her way of pointing out the incomprehensibility of what we call "infinity." We can't know such a thing in this life, at least not like we can know the now, the right in front of us. Yet something—our unquenchable curiosity, our soul's restlessness, the vastness of a star-filled sky—tells us we'll understand infinity one day.
The Fault in Our Stars is rated PG-13 for some language, as well as one scene of sexuality involving teenagers (no nudity). A few scenes feature teenagers drinking and fake-smoking. The film's themes (namely: death, cancer, human finitude) are pretty heavy, but there's also plenty of humor to balance things out. In general it's a cleaner-than-average PG-13 film that depicts adolescents as more mature and innocent than we're used to seeing.
Brett McCracken is a Los Angeles-based writer and journalist, and author of the books Hipster Christianity: When Church and Cool Collide (Baker, 2010) and Gray Matters: Navigating the Space Between Legalism and Liberty (Baker, 2013). You can follow him @brettmccracken.