There are seven kings: five have fallen, one is, the other has not yet come; and when he comes, he must remain a little while." (Rev. 17:10)
The seven kings are seven Caesars of the Roman Empire. It is not meant that Rome only had 7 emperors. Antichrist will be a coming Caesar or king of a revived Roman Empire. This is a kingdom whose future geographic spread is similar to that of the ancient Roman Empire.
When the prophecy says that the first five have fallen that means they died unnaturally as in
(Judges 3:25; 2 Sam. 1:10, 25, 27). We believe the five Caesars are -
Julius Caesar, Tiberius, Caligula, Claudius, and Nero.
All of these men either were murdered or committed suicide before John wrote the book of Revelation. The sixth Caesar,
Domitian, who was also murdered, was the one Roman Emperor living at the time John wrote
Revelation.
Domitian is the king who is indicated by
"one is".
The coming SEVENTH Caesar is
"the other".
"And are seven kings: five have fallen [Julius Caesar, Tiberius, Caligula, Claudius, and Nero] -
... one is, ... Domitian -
... the other ... the COMING seventh Caesar as Antichrist -
... has not yet come; and when he comes, he must remain a little while."
This seventh king has to come future to John's writing. When he comes
"he must remain a little while" and then he will be slain and resuscitated with the spirit of the FIFTH Caesar,
Nero. Then he becomes the EIGHTH king.
The
8th king is the
7th king come back to life with the spirit of the
5th king Nero. That is why the Bible says the 8th is OF the 7.
"And the beast who was, and is not, he also is the eighth, and is of the seven, and goes into destruction. " (Rev. 17:11)
The coming Antichrist will be the coming seventh Caesar. But
" ... he also is the eighth". The SEVENTH IS ALSO THE EIGHTH. This means he will be killed and resuscitated. He is slain the seventh king. He is brought back to life the eighth yet being a combination of the seventh's body but the fifth's spirit, that of Nero.
Therefore he is of the seven. And being slain and brought back to life the world's people will marvel at the sight of such an extraordinary being.
" ... And those who dwell on the earth, those whose name is not written from the foundation of the world in the book of life, will marvel when they see the beast, THAT HE WAS AND IS NOT AND WILL BE PRESENT." (Rev. 17:8b, my emphasis)