The Great Inception: Satan's Psyops From Eden to Armageddon

 You stand on a battlefield, surrounded by an enemy that you've been told doesn't exist.

This is a classic example of a PSYOP a psychological operation, a mission to change what you believe by feeding you information that is inaccurate, incomplete, or an outright lie. This PSYOP is one of many by entities who've been at war with God since the Garden of Eden.