Other thing the Rev 20 saints are not described as coming to life again, implying a physical resurrection of them as they are spiritually alive when they believe. And heaven is a dwelling place of people who are spiritually alive having had their spirits perfected.
Saints live forever, they are alive on earth and in heaven spiritually with Christ. This reigning is in Heaven, not on the earth, there is nothing here that says it is on the earth. Believers who depart the body, go to be with the Lord Jesus in heaven, and in heaven are kings and priests unto God. These thrones are in heaven, not on the earth.
Rev 1
Grace to you and peace from Him who is and who was and who is to come, and from the seven Spirits who are before His throne, 5 and from Jesus Christ, the faithful witness, the firstborn from the dead, and the ruler over the kings of the earth.
To Him who [
b]loved us and washed us from our sins in His own blood, 6 and
has made us [c]kings and priests to His God and Father, to Him
be glory and dominion forever and ever. Amen.
Happens IN HEAVEN, not on earth
Revelation 3:21
To him who overcomes I will grant to sit with Me on
My throne, as I also overcame and sat down with
My Father on His
throne.
4 And I saw thrones, and they sat on them, and judgment was committed to them. Then
I saw the souls of those who had been beheaded for their witness to Jesus and for the word of God, who had not worshiped the beast or his image, and had not received
his mark on their foreheads or on their hands. And they lived and reigned with Christ for [
a]a thousand years.
The rest of the dead are spiritually dead and never reign with Christ.
5 But the rest of the dead did not live again until the thousand years were finished. This
is the first resurrection. 6 Blessed and holy
is he who has part in the first resurrection. Over such the second death has no power, but they shall be priests of God and of Christ, and shall reign with Him a thousand years.
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This interpretation is the only one that fits all the other scriptures about the resurrection of the dead, both evil and good happening simultaneously and on the LAST DAY as Jesus taught.