Right, Revelation 17:18 (WEB):No actually the woman who sits on the beast is a religious system. Women symbolically always refer to religious systems. That is why Israel when they were in idolatry God called whores. For they were chasing false religion.
(18) The woman whom you saw is the great city, which reigns over the kings of the earth.”
Rome and the Vatican was/is a city that reigns over kings of other nations - it's referring to Papacy and the Roman Catholic church. It's nothing to do with the great tribulation and tribulation saints, it applies to the Gospel age, the time that all Christians go through.
Err, really? 10 + 7 = 17. Revelation 17:9-12 (WEB):How you get 17 kings is beyond me.
(9) Here is the mind that has wisdom. The seven heads are seven mountains on which the woman sits.
(10) They are seven kings. Five have fallen, the one is, the other has not yet come. When he comes, he must continue a little while.
(11) The beast that was, and is not, is himself also an eighth, and is of the seven; and he goes to destruction.
(12) The ten horns that you saw are ten kings who have received no kingdom as yet, but they receive authority as kings, with the beast, for one hour.
The beast is not the antichrist. Besides there are many antichrists - 1 John 2:18 (ESV):But the antichrist is a man and is clearly identified as such from the numerous passages that describe and define him!
(18) Children, it is the last hour, and as you have heard that antichrist is coming, so now many antichrists have come. Therefore we know that it is the last hour.