What is the second death? (Revelation 21:8)
The main Bible verses that mention the "second death" are found in the Book of Revelation: Revelation 2:11, 20:6, 20:14, and 21:8. These verses describe the second death as the lake of fire, which is the final judgment and eternal separation from God...
Revelation 20:6 6 Blessed and holy are those who share 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.