Madeleine L'Engle, A Severed Wasp
A recent novel by Madeleine L'Engle is entitled A Severed Wasp. If you're addressing young people or some other audience with strong stomachs, the title, which comes from one of George Orwell's essays, offers a graphic image of human lostness. Orwell describes a wasp that "was sucking jam on my plate and I cut him in half. He paid no attention, merely went on with his meal, while a tiny stream of jam trickled out of his severed esophagus. Only when he tried to fly away did he grasp the dreadful thing that had happened to him."
The wasp and people without Christ have much in common. Severed from their souls, but greedy and unaware, people continue to consume life's sweetness. Only when it's time to fly away will they gasp their dreadful condition.