The 8th king “was not” at the time revelation was written, according to your position.
However, the 6th king was at the time revelation was written (5 have fallen, one is). Did this 6th not persecute or kill the saints while it existed in the first century? If no, what is your reasoning? If yes, do the saints in revelation 20:4 include those persecuted and killed by the 6th king?
I think I see where you are coming from now. Thanks for clarifying.
During the time of the 6th king, the fact persecution and martyrdom was obviously taking place, it would be taking place when the beast is not though, meaning to me that the beast is in the pit at the time.
What's in question then, are any of them being martyred because of the following---which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands? I don't see how if the beast is in the pit at the time and that this is meaning once the beast ascends out of the pit, something that was still future to John during the time of seeing these visions..
What I have noticed in Revelation 20:4 is that there are more than one set of martyrs in view, meaning they are all not martyred for the same reasons nor during the same era of time.
Let's take John the Baptist for instance. Regardless whether John saw these visions in Revelation before or after 70 AD, one thing that is not being disputed, he saw these visions post that of the martyrdom of John the Baptist. And when he saw these visions he indicated that it was during the time of the 6th king and that the beast 'is not' at the time.
If John the Baptist is martyred during the time of the 6th king, this seems to indicate that it is during when the beast 'is not', therefore, John wasn't martyred because he refused to worship the beast, nor it's image, etc, he was martyred for these reasons instead-- for the witness of Jesus, and for the word of God. And though that can equally also apply to those that don't worship the beast's image, etc, it can't in return apply to John the Baptist if there is no image to worship or not worship, if according to John per the book of Revelation, those events were in his future, which makes them in John the Baptist's future as well.
To sum it up, a martyr such as John the Baptist fits this set of martyrs---for the witness of Jesus, and for the word of God--and not these---which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands---the fact that the latter requires that the beast has to ascend out of the pit first, which couldn't be the case during the time of John the Baptist if the beast was 'is not' at the time. So yes, even those martyred during the time of the 6th king also have part in the first resurrection since the following in Revelation 20:4 takes them into account---for the witness of Jesus, and for the word of God.
What I'm basically saying, is this. These reasons for being martyred---for the witness of Jesus, and for the word of God---apply to both martyrs such as John the Baptist and those that don't worship the beast's image, etc. While these reasons for being martyred---those that don't worship the beast's image, etc--only apply to someone post that of John seeing these visions since it requires that the beast has to ascend out of the pit first, something that was not the case during the martyrdom of John the Baptist, nor even during the martyrdom of Stephen, as another example.
One more point I would like to make is this, while it's on my mind.
Revelation 6:9 And when he had opened the fifth seal, I saw under the altar the souls of them that were slain for the word of God, and for the testimony which they held:
10 And they cried with a loud voice, saying, How long, O Lord, holy and true, dost thou not judge and avenge our blood on them that dwell on the earth?
11 And white robes were given unto every one of them; and it was said unto them, that they should rest yet for a little season, until their fellowservants also and their brethren, that should be killed as they were, should be fulfilled.
These being told to rest a little season would be meaning martyrs such as John the Baptist and Stephen, to name a few. And that these---until their fellowservants also and their brethren, that should be killed as they were---are meaning those martyred during the 42 month reign of the beast in John's future. And one more thing to point out is the following.
Revelation 16:2 And the first went, and poured out his vial upon the earth; and there fell a noisome and grievous sore upon the men which had the mark of the beast, and upon them which worshipped his image.
In order to make any sense of this, this obviously means all of these being affected here via this vial, they all have to be alive during the same era of time, which then means that the 42 month reign of the beast can't be spanning centuries like some have proposed. Keeping in mind that it is those that have been worshiping the beast during it's 42 month reign that the first vial is being poured out on, and that this is a one time only event, obviously.