Da POPE is Da ANTICHRIST... Some Protestants identify the Roman Papacy with the Number of the Beast (666) from the book of Revelation, and believe that the phrase Vicarius Filii Dei, reduced to its Roman numerals, sums up to 666, where "U" is taken as "V" (two forms of "V" developed in Latin, which were both used for its ancestor "U" and modern "V"). To produce 666, the sum works as follows: VICARIVS FILII DEI = 5+1+100+1+5+1+50+1+1+500+1 = 666 Serious Bidness!