An Apocalypse (Greek: Ἀποκάλυψις Apokálypsis; "lifting of the veil" or "revelation") is a disclosure of something hidden from the majority of mankind in an era dominated by falsehood and misconception, i.e. the veil to be lifted - Wikipedia
Imagine a community of ants hidden under a covering in the corner of a house. They have been told that this corner is the world. Every day the ants go about their business collecting food, securing their shelter and keeping their families warm. Some of the ants are content with their lives, happy to have what they have.