(b) The brothers were, according to Saxo, originally twelve, which is the well-established number of Odin's clansmen: his sons, and the adopted Asa-gods. But when the siege in question takes place, Saxo finds in his source only seven of the twelve mentioned as enclosed in the citadel beseiged by Fridlevus. The reason for the diminishing of the number is to be found in the fact that the adopted gods—Njord, Frey, and Ull—had left Asgard, and are in fact identical with the leaders of the besiegers. If we also deduct Balder and Hödr, who, at the time of the event, are dead and removed to the lower world, then we have left the number seven given. The name Bjorn, which they all bear, is an Asa epithet (Younger Edda, i. 553). The brothers have formerly had allies, but these have abandoned them (deficientibus a se sociis), and it is on this account that they must confine themselves within their citadel. The Asas have had the Vans and other divine powers as allies, but these abandon them, and the Asas must defend themselves on their own fortified ground.
(c) Before this the brothers have made themselves celebrated for extraordinary exploits, and have enjoyed a no less extraordinary power. They shone on account of their giganteis triumphis—an ambiguous expression which alludes to the mythic sagas concerning the victories of the Asas over Jotunheim's giants (gigantes), and nations have submitted to them as victors, and enriched them with treasures (trophæis gentium celebres, spoliis locupletes).
(d) The island on which they are confined is fortified, like the Asa citadel, by an immensely high wall (præaltum vallum), and is surrounded by a stream which is impassable unless one possesses a horse which is found among the brothers. Asgard is surrounded by a river belt covered with vaferflames, which cannot be crossed unless one has that single steed which um myrckvan beri visan vafrloga, and this belongs to the Asas.
(e) The stream which roars around the fortress of the brothers comes ex summis montium cacuminibus. The Asgard stream comes from the collector of the thunder-cloud, Eikthynir, who stands on the summit of the world of the gods. The kindled vaferflames, which did not suit an historical narration, are explained by Saxo to be a spumeus candor, a foaming whiteness, a shining froth, which in uniform, eddying billows everywhere whirl on the surface of the stream, (tota alvei tractu undis uniformiter turbidatis spumeus ubique candor exuberat).
(f) The only horse which was able to run through the shining and eddying foam is clearly one of the mythic horses. It is named along with another prodigy from the animal kingdom of mythology, viz., the terrible dog of the giant Offotes. Whether this is a reminiscence of Fenrir which was kept for some time in Asgard, or of Odin's wolf-dog Freki, or of some other saga-animal of that sort, we will not now decide.
(g) Just as Asgard has an artfully contrived gate, so has also the citadel of the brothers. Saxo's description of the gate implies that any person who does not know its character as a drawbridge, but lays violent hands on the mechanism which holds it in an upright position, falls, and is crushed under it. This explains the words of Fjölsvinnsmal about the gate to that citadel, within which Freyja-Menglad dwells: Fjöturr fastr verdr vid faranda hvern, er hana hefr frá hlidi.
(h) In the myth, it is Njord himself who removes the obstacle, "Odin's great gate," placed in his way. In Saxo's account, it is Fridlevus himself who accomplishes the same exploit.
(i) In Saxo's narration occurs an improbability, which is explained by the fact that he has transformed a myth into history. When Fridlevus is safe across the stream, he raises a ladder against the wall and climbs up on to it. Whence did he get this ladder, which must have been colossal, since the wall he got over in this manner is said to be præaltum? Could he have taken it with him on the horse's back? Or did the besieged themselves place it against the wall as a friendly aid to the foe, who was already in possession of the only means for crossing the stream? Both assumptions are alike improbable. Saxo had to take recourse to a ladder, for he could not, without damaging the "historical" character of his story, repeat the myth's probable description of the event. The horse which can gallop through the bickering flame can also leap over the highest wall. Sleipner's ability in this direction is demonstrated in the account of how it, with Hermod in the saddle, leaps over the wall to Balder's high hall in the lower world (Younger Edda, 178). The impassibility of the Asgard wall is limited to mountain-giants and frost-giants; for a god riding Odin's horse the wall was no obstacle. No doubt the myth has also stated that the Asas, after Njord had leaped over the wall and sought out the above-mentioned place of concealment, found within the wall their precious horse again, which lately had become the booty of the enemy. And where else should they have found it, if we regard the stream with the bickering flames as breaking against the very foot of the wall?
Finally, it should be added, that our myths tell of no other siege than the one Asgard was subjected to by the Vans. If other sieges have been mentioned, they cannot have been of the same importance as this one, and consequently they could not so easily have left traces in the mythic traditions adapted to history or heroic poetry; nor could a historicised account of a mythic siege which did not concern Asgard have preserved the points here pointed out, which are in harmony with the story of the Asgard siege.
When the citadel of the gods is captured, the gods are, as we have seen, once more in possession of the steed, which, judging from its qualities, must be Sleipner. Thus Odin has the means of escaping from the enemy after all resistance has proved impossible. Thor has his thundering car, which, according to the Younger Edda, has room for several besides the owner, and the other Asas have splendid horses (Grimnism., Younger Edda), even though they are not equal to that of their father. The Asas give up their throne of power, and the Vans now assume the rule of the world.