The number 666 in Greek and Hebrew adds up to "Neron Caesar", Nero Caesar.
It's the name of Nero, the Roman Emperor.
John was writing Revelation sometime around 64 AD.
The 4th kingdom in Daniel 2 & 7 is Pagan Rome.
the beasts in Revelation 13 are in the opposite order to Daniel 7
Daniel has the order of:-
1) Lion
2) Bear
3) Leopard
4) Dragon
4The first was like a lion
5And behold another beast, a second, like to a bear
6After this I beheld, and lo another, like a leopard,
7After this I saw in [the night ]visions, and behold a fourth beast, dreadful and terrible, and strong exceedingly;
and it had great iron teeth: it devoured and brake in pieces, and stamped the residue with the feet of it:
and it was diverse from all the beasts that were before it; and it had ten horns.
Revelation 13:1
1) Dragon
2) Leopard
3) Bear
4) Lion
And [the beast] which I saw was[ like] unto a leopard,
and his feet were as the feet of a bear,
and his mouth as the mouth of a lion:
and [the dragon gave] him his power, and his seat, and great authority.
john sees 7 beasts forward, same as the 7 last horns of daniel,
starting with 4 th little horn, from ten horns, of danials forth beast kingdom.
but john sees things different when looking backwards in time.
(1) And I stood upon the sand of the sea, and saw a beast rise up out of the sea,
A gentile world rulling kingdoms[not israel] and ther kings, rising among the people of the world.
having seven heads and ten horns, and upon his horns ten crowns,
and upon his heads the name of blasphemy.
3And I saw one of his heads as it were wounded to death;
and his deadly wound was healed: and all the world wondered after the beast.
rome was dead, 4 beast kingdom, no more rome, what became from area afterwards.
but was made alive again by the little horn, the church healed it and lived again.
not some man in the future who dies then lives again.
Revelation 13:15
(15) And he [had power] to give life unto [the image ]of the beast, that the image of the beast should both speak,
and cause that as many as would not worship the image of the beast should be killed.
this happen in the past history, the mighty church labeled the jews who keep Gods sabbath , and made it law,
and the power of rome, tortured or killed them, if they did not recant of there supposed bad ways.
I truly feel this is half of those 144,000 where killed by this beast kingdom in past.
the marks have been here since the churches started, but will [later be inforced],
like not working on sunday laws, and everyone takes a day off work,
and buy youre goods on saturday.
Those who accept this worship receive their mark of authority.
Plus the mark is contrasted with the seal of God, and been hear a long time.
The forehead is where our conscious thoughts reside.
The right hand is where our works are manifested.
The mark is spiritual, in the sense that we can be obsessed with the beast.
The mark is physical, in the sense that we can manifest our works on it's behalf.
I am not saying any that do are bad people,
Gods people are everywhere and not wish to offend,
but worried some will go through the tribulation.
because that the devil has the whole world decieved, like bible says, also says
My people are destroyed for lack of knowledge: because thou hast rejected knowledge,
I will also reject thee, that thou shalt be [no priest ]to me: seeing thou hast forgotten the law of thy God,
I will also forget thy children.
does not mean them will not be in his kingdom, but may go through jacobs troubles.
they [and] we who preach the law, are all Gods people, welcome in his kingdom,
but only few get to be priests that teach the people his ways in the future.