'Second Death' in the Bible

Let him who has ears, listen to what the Spirit is saying to the churches. He that overcomes shall not be hurt of the second death.

Blessed and holy is he who has a part in the first resurrection; on such the second death has no power, but they will be God's priests, and Christ's; and will reign with him for a thousand years.

And all were judged according to their deeds. And Death and Hades were hurled into the lake of fire. This is the second death, the lake of fire.

But as for the cowards, the faithless, the abominable, And for the murderers, fornicators, sorcerers, Idolaters, and all liars, Their part will be in the lake that blazes with fire and brimstone. "This is the second death."