In the book The Lion, the Witch, and the Wardrobe, part of the book series known as the Chronicles of Narnia, four siblings discover the world known as Narnia while stumbling through a portal in a wardrobe. While there in Narnia, they find out the White Witch is in control, and the fantasy world is stuck in a constant winter. The children embark on an adventure that eventually destroys the White Witch, saving Narnia and bringing spring to the world. Peter, Susan, Edmund, and Lucy are crowned as kings and queens and remain in Narnia for a long time, until they’re adults.
On a hunt for the White Stag, the four siblings accidentally come across the same portal they had originally entered and return to the ‘real’ world. Citing the movie, they fall out of the wardrobe, again as children, and find the owner of the house, Professor Kirke, in the room as well. We soon discover that their many years spent in the world of Narnia were only a couple minutes back in their world.
We are in our own Narnia. We existed before this life with our Father in Heaven and made the decision to come down to this earth and be tested, but we are here for only a short time. It may seem like a long time to us, but only because our perspective is limited. Our Heavenly Father has an eternal perspective. To Him, we are away for only a couple hours. We must make the most of what time we have. It is short, but it is the most important time among our entire eternal existence.