Judah Ben Samuel, also known as Judah he-Hasid (Judah the Pious), lived and worked from the end of the 12th century until the beginning of the 13th century in Regensburg, authoring a number of books in the German language.
Ludwig Schneider of Israel Today magazine has translated some of his work into English over the last few years, including “The Book of the Pious – Sefer Hasidim” and the “Book of Calculations – Sefer Gematriyot.”
Following the Christian crusades to the Holy Land, between 1096-1270, a regular correspondence developed between the Jews in the Holy Land and the Christian West. Thus, for example, the rabbis in Worms and Regensburg in Germany knew that Saladin’s Ayyubids had been ruruling in the Holy Land since 1187.
At this time, Judah Ben Samuel published the results of his biblical calculations (Gematria) and astrological observations and summarized as follows: “When the Ottomans (Turks) – who were already a power to be reckoned with on the Bosporus in the time of Judah Ben Samuel – conquer Jerusalem they will rule over Jerusalem for eight jubilees. Afterwards Jerusalem will become no-man’s land for one jubilee, and then in the ninth jubilee it will once again come back into the possession of the Jewish nation – which would signify the beginning of the Messianic end time.”