The Number of the Beast Is 666 by William Blake The number of the beast (Koinē Greek: Ἀριθμὸς τοῦ θηρίου, Arithmós toû thēríou) is associated with the Beast of Revelation in chapter 13, verse 18 of the Book of Revelation. In most manuscripts of the New Testament and in English translations of the Bible, the number of the beast is six hundred sixty-six or χξϛ (in Greek numerals, χ represents 600, ξ