2 Thessalonians 1:8
in flaming fire, to inflict punishment on those who ignore God, even on those who refuse obedience to the gospel of our Lord Jesus,
2 Peter 3:10-12
The day of the Lord will come like a thief, when the heavens will vanish with crackling roar, the stars will be set ablaze and melt, the earth and all its works will disappear.
Revelation 11:5
whoever tries to harm them, fire will issue from their mouth and consume their enemies; whoever should try to harm them, so must he be killed."
Revelation 20:15
and whoever was not found enrolled in the book of Life was flung into the lake of fire ??which is the second death, the lake of fire.