The Beast (Revelation) had just disappeared to Parthia and would one day reappear. Finally, the readers of Revelation were told to "calculate the number of the beast, for the number is that of a man; and his number is six hundred and sixty-six" (Rev. 13:18). John did not expect that his readers "who had understanding" to have any difficulty identifying the beast, since they could simply calculate the meaning of this number. "Neron Kaisar" (the Greek rendering, documented by archaeological finds), when transliterated into Hebrew נרון קסר (Nrwn Qsr) had a number of 666. The variant number 616 found in some manuscripts of
Book of Revelation as the most influential. Because these references appear as allusions rather than as quotes, it is difficult to know whether the author used the Hebrew or the Greek version of the Hebrew scriptures, but he was clearly often influenced by the Greek. He very frequently combines multiple references, and again the allusional style makes it impossible to be certain to what extent he did so consciously. According to several studies including a review by Dr James Tabor and Dr J. Massyngberde Ford, the Book of Revelation contains ancient pre-Christian texts of Jewish origin dating back to the time of John