'Second Death' in the Bible

He who has an ear, let him hear what the Spirit says to the churches. He who overcomes will not be hurt by the second death.’

Blessed and holy is the one who has a part in the first resurrection; over these the second death has no power, but they will be priests of God and of Christ and will reign with Him for a thousand years.

Then death and Hades were thrown into the lake of fire. This is the second death, the lake of fire.

But for the cowardly and unbelieving and abominable and murderers and immoral persons and sorcerers and idolaters and all liars, their part will be in the lake that burns with fire and brimstone, which is the second death.”