'Unquenchable' in the Bible

Whose fan is in his hand, and he will throughly purge his floor, and gather his wheat into the garner; but he will burn up the chaff with unquenchable fire.

And if your hand causes your downfall, cut it off. It is better for you to enter life maimed than to have two hands and go to hell—the unquenchable fire,

And if your foot causes your downfall, cut it off. It is better for you to enter life lame than to have two feet and be thrown into hell— [the unquenchable fire,

Whose fan is in his hand, and he will throughly purge his floor, and will gather the wheat into his garner; but the chaff he will burn with fire unquenchable.