In medieval Scandinavian sources a word often appears that has no exact equivalent in modern languages: seiðr. It is usually translated as "magic" or "sorcery", but the term denotes a specific practice, with its own tools, its own songs and a complex reputation. To understand it we must return to the texts, written in Iceland between the twelfth and fourteenth centuries, and so already in Christian times, but rich in older memories.
The main sources
Seiðr appears in three groups of texts:
- the eddic poems, preserved above all in the Codex Regius, an Icelandic manuscript of the thirteenth century;
- the Prose Edda and the Heimskringla attributed to Snorri Sturluson, in the first half of the thirteenth century;
- the sagas of Icelanders, prose narratives set between the ninth and eleventh centuries but written later.
None of these sources is a manual. They describe seiðr through episodes, often seen from outside, sometimes with hostility.
Freyja and Odin
In Ynglinga saga, the first part of Heimskringla, Snorri relates that Freyja, goddess of the Vanir, was the first to teach seiðr to the Æsir, because among the Vanir it was a common practice. Later in the same text Snorri credits Odin with knowledge of seiðr: with it he could learn the fate of men and foretell what had not yet happened, but also cause death, misfortune or illness, take away someone's wits or strength and give them to another.
Snorri adds a decisive detail, however: this magic was accompanied by such ergi, a shame tied to the loss of manliness, that men did not consider it worthy of them, and so it was taught to priestesses.
Loki's accusation
The eddic poem Lokasenna confirms this ambiguity. In stanza 24 Loki accuses Odin of having practised seiðr on the island of Samsey, beating as seeresses do, and of having gone among men in the guise of a wizard, which Loki deems unmanly. The insult works because the audience knew the link between seiðr and the female world.
Elements of the practice
Putting the accounts together, some recurring elements can be identified:
| Element | Old Norse name | Typical source |
|---|---|---|
| Ritual platform | seiðhjallr | sagas |
| Songs | varðlokkur, galdrar | Saga of Erik the Red |
| Staff | stafr, völr | sagas and grave goods |
| Gathering of onlookers | — | sagas |
| Raised seat | hásæti | Saga of Erik the Red |
The practice generally involves an officiant, often a woman called a völva or seiðkona, who sits in a raised position while others sing. The song seems to serve to summon presences or to create the state in which the seeress "sees".
Seiðr to know, seiðr to harm
The sagas show two very different uses:
- Divinatory. In the Saga of Erik the Red a seeress announces the end of a famine in Greenland. In Vatnsdæla saga a seeress foretells that a man will settle in Iceland.
- Hostile. In Laxdæla saga a family of sorcerers, Kotkell and Gríma with their sons, perform a night-time seiðr on the roof of a house that causes a boy's death. The authors present these characters as dangerous, and the community does away with them.
This double face explains seiðr's reputation: a precious knowledge, yet potentially destructive, and associated with social roles that Viking-age culture viewed with suspicion.
What we know and what we do not
The sagas were written by Christian authors, several centuries after the events they narrate. They may have exaggerated or simplified. Yet several elements find archaeological parallels: in some Scandinavian graves of Viking-age women, metal staffs have been found that many scholars interpret as ritual staffs. The interpretation is debated, but it makes it less likely that seiðr is a purely literary invention.
Many researchers have also compared seiðr with ecstatic practices of the peoples of northern Eurasia, such as the Sami, neighbours and partners of the Scandinavians. The comparison is useful but remains a hypothesis: Old Norse sources do not use language that allows us to reconstruct with certainty the seeress's inner experience.
The symbolic meaning
Seiðr expresses an idea found in many traditions: knowledge of fate requires sitting on high, suspended between the community and what transcends it, and becoming the instrument of voices that are not one's own. The price is ambiguity: whoever sees too much becomes a border figure, respected and feared. Reading these pages carefully means accepting this ambivalence without reducing it to folklore or turning it into a promise of powers.
In short
- Seiðr is a magical practice described in Icelandic sources of the thirteenth and fourteenth centuries.
- Snorri attributes it to Freyja and Odin and links it to ergi, male shame.
- Recurring elements are the platform, the songs, the staff and the seeress seated on high.
- The sagas show both divinatory and hostile uses.
- Some archaeological finds appear consistent with the literary descriptions.
