'Unquenchable Fire' in the Bible

His winnowing-fan is in his hand, and he will thoroughly cleanse the threshing-floor. He will store his wheat in the granary, but will burn up the chaff in unquenchable fire."

He has his fan in his hand to cleanse his threshing-floor thoroughly, and to gather the wheat into his storehouse, but the chaff will he burn with unquenchable fire."