What if God's relevance has expired? Octavia Butler's 'Parable of the Sower'

In a world of a collapsed economy, drug addiction and illiteracy are at an all-time high, a 15 yr old black girl Lauren Olamina finds herself leading a group of strangers to a safe space while creating and converting people to religion and belief that she came up with through her observation from journaling how the world had changed and where God fits in all of this.