Who is included in the first resurrection in Revelation 20?
The first resurrection includes all believers: Old Testament saints, Church Age believers, and Tribulation saints. They are raised to life and will not be harmed by the second death. Instead, they will be priests of God and of Christ and will reign with Him for a thousand years.
Les explains that the first resurrection in Revelation 20 is the resurrection of all the believers—Old Testament, Church Age, and Tribulation. On such people the second death has no power; they will be priests of God and of Christ and will reign with Him. He notes the thousand years is repeated and compares Scripture with Scripture, turning to 2 Peter chapter 3.
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.