Revelation 2:11 He who has an ear, let him hear what the Spirit says to the churches. He who overcomes will not be hurt at all by the second death.
Revelation 20:6 Blessed and holy are those who have part in the first resurrection. The second death has no power over them, but they will be priests of God and of Christ and will reign with him for a thousand years.
I don't know how it can be more clear.