The Prose Edda is a 13th-century Icelandic guide to the native poetry and mythology of the North, attributed to the chieftain and historian Snorri Sturluson. This English version opens with a Foreword in Snorri's own voice that is unmistakably Christian: it begins with Almighty God, Adam and Eve, Noah, and the tower of Babel, then explains how scattered peoples lost the name of their Maker and came to honor mighty ancestors as gods.
On that footing the longest narrative section, The Fooling of Gylfe, can tell the heathen stories without endorsing them. King Gylfe travels in disguise to Asgard and questions three figures seated one above the other, Har, Jafnhar, and Thride. His questions march through the whole mythology: the highest god and his many names, the creation of the world out of ice and fire, the making of the first man, the world tree, the chief gods and goddesses, the binding of the wolf, and the death of Balder.
The climax of that section is Ragnarok, the doom of the gods. A long savage winter and wars among kindred give way to wolves devouring the sun and moon, the loosing of the Fenris-wolf and the Midgard-serpent, and Surt riding from the south with fire. The gods fall in a last battle on the plain Vigrid and the world burns and sinks, after which the text promises a fresh green earth and surviving gods, a return rather than a pure ending.
Two shorter parts shift from myth to poetics. Brage's Talk has the god of poetry answer a visitor's questions and retell tales such as Idun's apples and Thor's encounter with the giant Hrungner. The extracts from the Poetical Diction, or Skaldskaparmal, then treat verse as a discipline, distinguishing kinds of poetic language and explaining the kenning, the descriptive byname that stands in for a plain word and carries a thread of story with it.
Holding the work together are the Afterwords, which return to the Foreword's argument with surprising boldness. They line the gods up against figures from the Trojan war, calling Thor a version of Hektor and the burning of Troy the flame of Surt, and they instruct young skalds to keep the old imagery alive while refusing to believe in heathen gods. The book is therefore two things at once: a rich storehouse of Norse myth and a careful guide to using that myth as craft rather than creed.