The 'Book of Eli' has several significant aspects. It is a post - apocalyptic story that uses the idea of a man protecting a precious Bible in a desolate world. One significance is that it shows the power of faith. Eli's unwavering belief in the importance of the Bible drives his entire journey. He endures many hardships and risks his life to preserve it. It also represents hope in a dark world. The Bible he guards is like a symbol of a better past and a potential for a better future, even in a world that seems to have lost all morality and order.