Read the passage again without a preconceived opinion a thousand years are literally one thousand years. Explain how the martyred saints have already lived and died during this time, but also during the same time others called blessed and holy and overcome the second death shall also reign with Christ for a thousand years???
Premils, such as me, and I can't speak for all Premils, tend to understand the following like such.
Revelation 20:4 And I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years.
5 But the rest of the dead lived not again until the thousand years were finished. This is the first resurrection.
6 Blessed and holy is he that hath part in the first resurrection: on such the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years.
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And I saw thrones, and they sat upon them, and judgment was given unto them
Compare with the following.
Daniel 7:22 Until the Ancient of days came, and judgment was given to the saints of the most High; and the time came that the saints possessed the kingdom.
(which would mean that this---the Ancient of days came---is meaning the 2nd coming)
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and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God
Compare with the following.
I saw under the altar the souls of them that were slain for the word of God, and for the testimony which they held(Revelation 6:9)
(these would be including saints martyred before the time of the little season meant in Revelation 6:11. Which means while this little season is taking place back on earth, these continue to rest until that little season has been fulfilled. But not to be confused with the little season meant in Revelation 20. That little season is after the thousand years. The little season meant in Revelation 6:11 is before the thousand years begin and explain how and when the following were initially martyred---which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands. Where I go into more detail per the next section)
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I saw under the altar the souls of them that which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands
Compare with the following.
a little season, until their fellowservants also and their brethren, that should be killed as they were, should be fulfilled(Revelation 6:11)
Daniel 7:21 I beheld, and the same horn made war with the saints, and prevailed against them
Revelation 13:5 And there was given unto him a mouth speaking great things and blasphemies; and power was given unto him to continue forty and two months.
Revelation 13:7 And it was given unto him to make war with the saints, and to overcome them: and power was given him over all kindreds, and tongues, and nations.
Revelation 13:15 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.
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but they shall be priests of God and of Christ, and shall reign with him (as kings) a thousand years.
Compare with the following.
To him that overcometh will I grant to sit with me in my throne(Revelation 3:21). To determine when this initially begins, see Matthew 25:31, Matthew 19:28
Revelation 5:10 And hast made us unto our God kings and priests:
and we shall reign on the earth
And when it comes to this portion of Revelation 20:6, Amils typically bring up passages such as Revelation 1:6 to support this while neglecting to also bring up Revelation 5:10 to support this. I wonder why? Could it possibly have to do with what I underlined in verse 10? For an example of what I'm meaning, consult post #1,771. Where is there any mention of Revelation 5:10 in that post?)
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This is the first resurrection.
See post #1,765. No need for me to repeat all of that again in this post.