Although I would not say that this book is entirely on the level of Heller's first three books (all masterpieces), as it does not, perhaps, resonate with the vibrancy and poignancy of everyday life as those works do, God Knows is nevertheless an entertaining, blasphemous, and laugh-out-loud hilarous Bibilical parody. Many an author has turned their skills to the task of setting a famous Bibilical character into the universe of modern literature and re-telling their story that way, but few have done it with the intelligence, wit, and sheer knowledge of Heller. This is the work of a man that, though perhaps a Jewish atheist (I'm not too sure of what Heller's religious views were), nevertheless clearly had a vast and perhaps encyclopedic knowledge of the Bible - or the Old Testament, at any rate. Here, we have the story of King David ("the best story in The Bible", as the narrarator himself repeatedly tells us), told through Heller's first-person satiric lens, casting the famous and mythical character straight into the pantheon of modern literature. Many may well consider this book blasphemous (although I am glad, and pleasantly surprised, indeed, to see in some of the other reviews here that members of the clergy have read and enjoyed it), it is all in good fun, and quite an entertaining read - as well as also hitting home at several points. Although there are several laugh-out-loud segments, Heller, beneath the farce, is also asking existential questions, as well as tackling some complex moral issues: God's apparent inclination towards punishing the innocent for the crimes of the guilty is given a good bit of attention here. Although this book may well have some sort of a built-in audience due to it's Bibilical leanings, it probably does not have a more or less universal audience as his first three books did - being steeped heavily, as it is, in its subject matter. I think that you will enjoy the book a lot more, and will certainly find it funnier, if you are familar with The Bible - or at least the parts that it deals with. Indeed, if you are highly steeped in Bibilical subject matter, you may well consider this Heller's best book. I reccommend it regardles, however: even if you are not knowledgable with its inherent subject matter, you will still find the book enjoyable, especially if you are a fan of Heller's particular style and liked his other writings.