Since Hebrew and Greek letters have numerical equivalents (i.e., A=1, 6=2, J=10), the number of the beast (666) is the sum of the separate letters of his name. Of countless explanations, the most probable is Neron Caesar (in Hebrew letters), which, if spelled without the final n, also accounts for a variant reading, 616.
Nero was the Roman Emperor from 54-68 AD. The book of “Revelations,” originally a Hebrew/Jewish book written about 66 AD, was plagiarized by Christians, who added stuff about Jesus at the beginning and end.
New Testament ‘scholars’ erroneously/deliberately mistranslate the classical Greek word charagma as ‘mark' rather than money. Look the word up in the unabridged Greek lexicon by H.B. Liddell and see the correct, in context translation is money.
In 66 AD, the Jews revolted against the Romans and coined their own money. Therefore, the “Revelation” is: “Nero the Beast’s money is evil and our Jewish money is good.”
Another related word for "Money" not translated correctly in the New Testament is “Mammon”
. “Mammon” is an Aramaic word for money (Encyclopedia of Religion and Ethics 1951
, sv, “Mammon.”). The classical Greek word philarguron, mistranslated as “covetousness” in some New Testament bibles, at Luke 16:14 and as “money” In 1 Timothy 6:10, means fond of silver. Silver was the money of Christ’s day hence, Luke 16, in context reads, “You cannot serve God and money (mammon): you’ll either love the one and hate the other ... the Pharisees (Jews) who loved money (philarguron), heard all this and scoffed.”
"No one buys or sells without the MONEY of the beast on/in mind/hand. . . This calls for wisdom. If anyone has insight, let him calculate the number of the beast, for it is man's number. His number is 666" (Rev. 13:16-18).