Aþum Swerian: Swearers of Oaths?

Beowulf is a story about a doomed people who are destined for annihilation as a result of depredation, feuding, and cyclical inter-tribal violence. Yet, the violence described in the poem is not always outward but often occurs from within, as acts of intra-tribal violence frame much of the narrative. Even seemingly positive events are thus generally short-lived. Accordingly, in the eminence of King Hrothgar’s glorious construction of Heort, the narrator reveals the hall’s imminent doom:  

Sele hlifade  
heah ond horn-geap.   Heaðo-wylma bad
laðan liges.                Ne wæs hit lenge þa gen  
þæt se ecg-hete aþum swerian 
æfter wæl-niðe wæcnan scolde. (81-5)

The hall sheared upward, high and horn-vaulted. For the battle-surge it waited, loathsome fire. Nor was it long before the edge hate of aþum swerian must awaken for slaughter-spite.

Beowulf Manuscript, excerpt with aþum swerian.” BL, Cotton Vitellius a.vx. MS 130v, BL 133v.

This dire prediction identifies the causal agents of disaster as aþum-swerian. But given that this term is unattested and grammatically invalid, we are bound to ask: Who are these aþum-swerian? The conventional approach solves this conundrum by creating a new term in imitation of such copulatives as suhtergefaedaran (“nephew and uncle” from Beowulf), gisunfader (“son and father” from Heliand), and sunufatarungo (“son and father” from Hildebrandslied). Following these models, the editors of Klaeber 4 (120, 350, 437) emend the term to aþum-sweoran, thereby conjoining aþum (sons-in-law) and sweoran (fathers-in-law). Because this solution apparently predicts the sundering of vows between Ingeld and Hrothgar (2022-66), this emendation has become the dominant convention. 

Nevertheless, there are problems. First, the emended term, glossed as “sons-in-law and fathers-in-law,” differs markedly from the models, which are glossed as “nephew and uncle” and “son and father.” And though the term is indeed attested with the gloss “son-in-law,” the rendering aþum-sweoran is a hapax legomenon attested nowhere in the extant corpus of Old English literature. Making the invention yet more suspect is the well-attested phrase, sweor ond aþum (father-in-law and son-in-law), which would seem to preclude a need for the copulative. 

The proposed term also falls short in its narratological salience. There are no “sons-in-law” implicated in the violence that erupts at Ingeld’s wedding, only one “son-in-law.” Yet more problematic, this single crisis cannot account for the apocalyptic imagery that frames Heorot’s catastrophe. Prior to the prediction of calamity, the hall’s construction is marked by an array of tropes that suggest the Tower of Babel. As Tristan Major observes, “Hrothgar’s rise to power [64-79] and the building of his hall, Heorot, echoes Nimrod and the Tower of Babel” (242).” Likewise, as Daniel Anlezark observes, the hall’s destruction is marked by retributive images of Flood and Hellfire (336-7). In sum, the proposed solution leaves important problems unresolved. It inaccurately predicts “sons-in-law” in respect to Ingeld. And it does not account for the apocalyptic imagery of idolatry, flame, and fire that marks Heorot’s doom.

The Tower of Babel. London, British Library, Cotton Claudius B.IV, fol 19r. 

In this review, we promote an alternative initially proposed by Michael Alexander. This alternative interprets aþum as the plural dative “oaths” and emends swerian to the plural dative -swaran (swearers). The rendering “swearers of oaths,” acknowledged by Klaeber 4 as possible, has the advantage of relying on attested terms. The plural dative form aþum (oaths) occurs not only in the corpus but also in Beowulf, and the second term (-swara) occurs in a similar compound, man-swaran (criminal swearers). Yet more support for this construct can be found in the oath-swearing between Hengest and Finn. Here the term aðum also occurs as a plural dative, framing a parallel scenario in which oaths will be broken and a hall destroyed:

Fin Hengeste
elne, unflitme aðum benemde
þæt he þa wealafe weotena dome 
arum heolde, þæt ðær ænig mon 
wordum ne worcum wære ne bræce . . . .  (1097-100)

“Fin with Hengest without quarrel declared his oath that he would by his council’s judgment hold [the truce] with honor that any man there by word or deeds should not break the covenant . . . .”

The emendation to aþum-swaran also offers much stronger alignment with the narrative arc. Notably, this alignment begins with the paired disclosures that define Fitt I: Whereas the history of Grendel’s origin locates Cain’s act of murder as a calamity in the past, the prediction of murderous oath-swearers locates Heorot’s destruction as a calamity in the future. This parallel design is highly significant: In effect, it forges a link between Cain’s crime of kinship murder and the internecine violence that spells Heorot’s doom. This linkage, moreover, not only intimates the Danes’ ongoing state of iniquity but also explains the apocalyptic tropes that frame the hall’s calamity. Accordingly, Heorot’s doom emerges not as a circumstantial event caused by brawling Danes and Heathobards but as an in-kind retributive event that aligns perfidious Nordic warriors with the curse of exile from human joys, entailed in Cain’s crime and punishment.

Cain killing Abel with a scythe. Bible Historiale. British Library, MS Harley 4381, f.10r, 1403-1404.

Notably, also, the intimation of Danish perfidy is borne out across the narrative arc. Beowulf and the narrator declare Unferth’s fratricidal treachery; the narrator insinuates Hrothulf’s possible resentment against his uncle, Hrothgar; the lay of Finn and Hildeburh recounts the Danes’ violation of peace oaths in favor of murderous revenge; Hrothgar’s adoption of Beowulf sparks Wealhtheow’s resistance and her appeals to warriors in the hall; and Hrothgar violates his promise of protection to the Geats, potentially inciting Beowulf’s revenge. This surfeit of Danish treachery, in other words, aligns perfectly with the narrator’s revelation that “swearers of oaths” will soon incite violence.

For this reason, also, the reference to oath-swearers functions as a formula for suspense—a design that impels the audience to consider, in a fictive world replete with perfidy and oath-making, which of the oath-swearers will incite a conflagration? Will Unferth the fratricide murder again? Will Hrothulf avenge his displacement from the throne? Will one of the Danes retaliate against Hrothgar’s covenant with Beowulf, the foreigner? Will Wealhtheow incite the same kind of intertribal violence that erupts in the Frisians’ hall? Will Beowulf retaliate against Hrothgar for deserting his men?

The emendation to aþum-swaran presents a solution that is better attested and more meaningful than the conventional emendation to aþum-sweoran. As noted above, the gloss of “sons-in-law” does not possess predictive value regarding Ingeld, and the sundering of vows between Ingeld and Hrothgar cannot explain the apocalyptic imagery surrounding the disclosure of Heorot’s doom. Conversely, that same apocalyptic imagery aligns perfectly with a depiction of Danish society as inherently unstable, doomed to self-destruction, as the unchecked impulses of egoistic aggrandizement overcome the covenants that bind social order. Likewise, the depiction of Danish perfidy permeates the narrative arc. Accordingly, the disclosure of violent oath-swearers functions within an ingenious narrative design. It affords the schadenfreude of dramatic irony, as the audience anticipates a disaster the characters know not of. And it thus generates a game of blind corners, in which the audience’s knowledge of impending violence from oath-swearers charges subsequent events with anticipation and suspense. 

Chris Vinsonhaler & Richard Fahey
Medieval Institute
CUNY University & University of Notre Dame


Selected Bibliography & Further Reading

Alexander, Michael. Beowulf: A Glossed Text. Penguin Classics, 1995.

Anlezark, Daniel. Water and Fire: The Myth of the Flood in Anglo-Saxon England. Manchester U Press, 2006. 

Major, Tristan. Undoing Babel: The Tower of Babel in Anglo-Saxon Literature. U Toronto Press, 2018. 

The Slaying of Abel in Apocryphal Tradition

The account of Abel’s slaying in Genesis represents one of those moments where the desire for more detail is frustrated utterly by Scripture’s silence. How did Cain murder his brother? Where did he learn to kill? What did he do with the body? And so on and so forth in this manner, without recourse to satisfactory answers from the primary sources.

Much like Nature, however, ancient and medieval scriptural commentators abhorred a vacuum; wherever lacunae existed in the biblical narratives, many were more than happy to fill the gaps with clever conjecture, rationalistic explanations, and apocrypha sourced from a variety of traditions. Perhaps the grandest example of this taste for a veritably encyclopedic concatenation of biblical trivia is what Bernard Bischoff economically called Das Bibelwerk (or the Reference Bible), the massive eight-century Irish biblical commentary bearing the Latin title Pauca problesmata de enigmatibus ex tomis canonicis (“Little Questions on Obscurities from Canonical Books”). Unsurprisingly, then, there arose in both the early Jewish and Christian textual communities a number of traditions dealing with the precise method of Abel’s murder.

The neck or head, for example, is identified in a number of early Jewish sources, including the Genesis Rabbah, as the anatomical locus of Abel’s murder. Similarly, the Babylonian Talmud explains how Cain, unfamiliar with the mechanics of death, effectively unleashes a flurry of wild blows until he finds the sweet spot of the neck. The neck and its vital organs are further implicated in the act of strangulation or suffocation, a method alternatively suggested both in Ambrosiaster’s Quaestiones Ueteris et Noui Testamenti CXXVII and the Reference Bible.

Cain strangling Abel. Ivory panel from Salerno Cathedral, c. 1084, now in the Louvre.

Tucked away in a quirky little sermon on tithing dating from at least the eighth century (a copy of which survives in British Library, MS Royal 5. E. XIII, ff. 9r-11r ), we also find the jarring explanation that Cain both suffocated and decapitated Abel with the jawbone of an ass, perhaps even implying that he used animal’s remaining teeth to saw off his brother’s head. Yikes! In fact the earliest literary source to specify the jawbone of an ass as Cain’s murder weapon is a comment on Genesis IV. 8 found in glosses originating from the Canterbury school of Theodore and Hadrian in the seventh century.

Cain striking Abel with a jaw-bone. The “Taymouth Hours.” British Library, MS Yates-Thompson 13, f. 28r, s. xiv (2/4).

Among others, J. E. Cross and T. D. Hill have also noted the presence of this tradition both in the later Old English prose dialogue Solomon and Saturn, as well as in the mid twelfth-century Irish Lebor Gabála Érenn, where the jawbone is said to be that of a camel.

Cain striking Abel with a jaw-bone (of a camel? ass?). The “Huth Psalter.” British Library, MS Additional 38116, f. 9r, s. xiii ex.

The extra-scriptural tradition that Cain used a jaw-bone (whether that of an ass, camel, or otherwise) to slay his brother may ultimately derive, as M. Shapiro and A. A. Barb have suggested, from his designation as a tiller of the ground. In trying to account for the murder-weapon, early literal-minded commentators may have sought an instrument germane to Cain’s agrarian occupation, such as a scythe.

Cain killing Abel with a scythe. Bible historiale. British Library, MS Harley 4381, f. 10r, 1403-1404.

Such an implement would not, of course, have been made from metal, since the forging of metal tools only began generations later with Tubal-Cain, as any early biblical scholar worth his salt would have remembered. In the absence of metallurgical science, then, a scythe or sickle would have been made of animal bone, perhaps even a jawbone (or so the argument goes). As it happens, excavations of Near Eastern palaeolithic settlements have discovered just this sort of object, animal jawbones inset with flint blades as a replacement for the original teeth.

That his agrarian occupation did encourage other creative conjectures, however, is clear enough from the statement, found in the eighth or ninth-century Vita Anstrudis, that Cain killed his brother with a hoe; or from Benzo of Alba’s Ad Heinricum Imperatorem Libri VII where, this time, Cain is said to have used a shovel.

Cain cleaving Abel’s head with a shovel. The “Psalter of St. Louis.” Bibliothèque nationale, Lat. 10525, f. 2r, 1270-1274.

Yet by far the most macabre explanation comes to us from the thirteenth-century Joca monachorum (“Monks’ Jokes”) dialogue. There, in response to the question how Cain decapitated his brother, the interrogator is told matter of factly that, since he didn’t have a sword, Cain used his teeth, and then buried Abel twelve feet deep. One of the very earliest sources to allude to this outrageously primal method of killing is the apocryphal Latin Life of Adam and Eve (or the Apocalypse of Moses in the Greek version), a collection of texts largely considered to be Jewish in origin and dating to the first century AD. Here Eve is said to have dreamt of Abel’s murder, seeing in her vision Cain mercilessly drinking up every drop of his brother’s blood and vomiting it forth upon the earth. A striking depiction of this scene can be found in the so-called “Alba Bible” from Maqueda, Spain (c. 1430).

Some such source as this must also lie behind the account given in the Zohar (a thirteenth century collection of esoteric and Kabbalistic scriptural exegesis), where Cain is said to have bit his brother like a serpent because he did not know how to separate body and soul.

It is worth pointing out as well that the Book of Enoch, an apocryphal Jewish text dating from around the third to first century BC, describes the antediluvian giants of Genesis 6 as cannibalistic monsters who drank the blood of their own race. These very giants, according to the tradition preserved in both the Irish Reference Bible and the Old English poem Beowulf, among others sources, had sprung directly from the murderous seed of Cain. The Book of Enoch, or at least a fragment of its Latin translation, was also definitely known in Anglo-Saxon England by the tenth century at the latest, and it is perhaps this very bit of apocryphal lore that the Beowulf poet had in mind when describing the monstrous kin of Cain, among whom the blood-drinking horror of the marches—Grendel—numbered.

While certainly not exhaustive, the above little discussion will have shown, if nothing else, how wonderfully (or frightfully) imaginative and diverse apocryphal tradition could be in the face of Scripture’s silence. For questions remained, and answers were demanded—and when every detail, no matter how seemingly trivial, potentially held deep symbolic significance, such silence was indeed unacceptable. Luckily, there existed a robust inheritance of extra-biblical sources and authorities to satisfy even the most inquisitive of minds.

Christopher Scheirer

PhD Candidate
Medieval Institute
University of Notre Dame

Further Reading:

Bischoff, Bernard and Michael Lapidge, eds., Biblical Commentaries from the Canterbury School of Theodore and Hadrian (Cambridge, 1994), p. 499.

Barb, A. A., “Cain’s Murder-Weapon and Samson’s Jawbone of an Ass,” Journal of the Warburg and Courtauld Institutes 35 (1972), pp. 386-87.

Cross, J. E., “Cain’s Jawbone: Earlier Allusions” in KM 80: A Birthday Album for Kenneth Muir, Tuesday, 5 May, 1987, ed. A. Kettle (Liverpool, 1987), p. 33.

Cross, J. E. and T. D. Hill., The Prose Solomon and Saturn and Adrian and Ritheus (Toronto, 1982).

Henderson, G., “Cain’s Jaw-Bone,” Journal of the Warburg and Courtauld Institutes 24.1/2 (1961), pp. 108-114.

Mellinkoff, Ruth, “Cain’s Monstrous Progeny in Beowulf: Part I, Noachic Tradition,” Anglo-Saxon England 8 (1979), pp. 143-162.

Orchard, Andy, Pride and Prodigies: Studies in the Monsters of the Beowulf-Manuscript (Toronto, 1995), pp. 58-85.

Shapiro, M. “‘Cain’s Jaw-bone That Did the First Murder’,” The Art Bulletin 24.3 (1942). Pp 205-212.

W. Suchier, ed. Das mittellateinsche Gespräch Adrian und Epictitus: nebst verwandten Texten (Joca Monachorum) (Tübingen, 1955), no. 23, p. 124.

Genesis Rabbah: The Judaic Commentary to the Book of Genesis. A New American Translation, trans. J. Neusner (Atlanta, 1985), p. 248.

Sanhedrin, ed. I. Epstein, trans. Jacob Shachter, 2 vols. (London, 1935), I, 37b, p. 237.

Vita Anstrudis Abbatissae Laudunensis V, 25-26, ed. W. Levison, MGH: Scriptorum Rerum Merovingicarum 6 (Hannover, 1913), p. 68: “Semper enim pars malorum infesta est parti piorum, ex quo Cain fregit sarculo guttur fraternum.”