While Cast Away never overtly mentions God, it's saying a great deal about God and the problem of suffering.
For a fuller discussion with Matt on Cast Away and the Death of God check out this episode of Ravel the podcast https://podcasts.apple.com/us/podcast/ravel/id1460638854?i=1000541033652
Ironic cover by Boyce Avenue https://youtu.be/zTPgJ0EWBnA