The Asega-bôk, English: "Book of the Judges", was part of the legal code for the Rustringian Frisians.
A codex containing a copy of the code, the First Riustring Manuscript, survives in the archives at Oldenburg (24, 1, Ab.
Rolf Bremmer noted that the attribution of the list to Jerome in the Asega-bôk's version was copied from Pseudo-Bede, and that the added conclusion is similar to Comestor's Historia scholastica.
He identifies three levels of ideology represented in those texts: "(1) the glorification of the concept of law in general, (2) the assertion of the idea of a Pan-Frisian law, (3) the propagation of the idea of Frisian independence and the promotion of Frisian unity against threats from outside".
[12] The only text in the codex he deems exempt from such ideology is the Fifteen Signs before Doomsday.