Another theory about the historical basis of the book was advanced by Adolf Büchler in 1899. He held that the book describes the persecution of the Jews in the Fayum region of Egypt. It is certain that the Jews abruptly changed allegiance from Egypt to Syria in 200 BC. This author presumes that the change must have been due to persecution in Egypt.
The book was presumably written some time after the events it purports to describe and its use in the Orthodox Church also might suggest it was composed before the 1st century AD. It may be a product of very late Judaism or very early Christianity. One theory, advanced by Ewald and Willrich, holds that the relation is a polemic against Caligula, thus dating from around AD 40, but this theory has been rejected by more recent authors, because Ptolemy in the book does not claim divine honors as Caligula did.