616 (number) i.e. (2!)² + (3!)² + (4!)² = 4+36+576=616. 666 is generally believed to have been the original Number of the Beast in the Book of Revelation in the Christian Bible. In 2005, however, a fragment of papyrus 115 was revealed, containing the earliest known version of that part of the Book of Revelation discussing the Number of the Beast. It gave the number as 616, suggesting that this may have been the original. One possible explanation for the two different numbers is that they reflect two different spellings of Emperor Nero/Neron's name, for which (according to this theory) this number
The Beast (Revelation) while some idealists like Beale take a more eclectic approach which see that the book portrays events throughout history while also predicting some future events such as the return of Christ. In this view, the beast from the sea is interpreted as the state or any human kingdom that is in opposition to God. This would include the Roman Empire but would broadly apply to all empires. Scholars take their cue from the parallels between Revelation 13 and Daniel 7, noting that in Daniel 7:17 that the beasts are revealed as kingdoms. Therefore, given that the beast of Revelation thirteen