The text presents itself as angelic revelation rather than the work of a named human author, and it survives in no single complete manuscript, only later medieval copies and Cairo Geniza fragments assembled into a modern critical reconstruction, so neither its compiler nor a precise date can be read directly off any single witness.
What would resolve this An earlier or more complete manuscript witness, or an external contemporary reference to the text, would help fix its date and origin; comparative philological work situating its Greek-influenced Hebrew more precisely within the late antique Jewish magical corpus could narrow the range further.
OpenJewish studies and late antique magical and esoteric textual studiesMichael A. Morgan, translator, based on Mordecai Margalioth's critical Hebrew reconstruction, Sefer Ha-Razim: The Book of the Mysteries (Michael A. Morgan)