Matthew 3:12 His winnowing fork is in his hand, and he will thoroughly cleanse his threshing floor. He will gather his wheat into the barn, but the chaff he will burn up with unquenchable fire." (WEB KJV WEY ASV DBY WBS YLT NAS RSV NIV)
Mark 9:43 If your hand causes you to stumble, cut it off. It is better for you to enter into life maimed, rather than having your two hands to go into Gehenna, into the unquenchable fire, (WEB ASV DBY YLT NAS RSV)
Mark 9:45 And if thy foot serve as a snare to thee, cut it off: it is better for thee to enter into life lame, than having thy two feet to be cast into hell, into the fire unquenchable; (DBY YLT)
Luke 3:17 whose fan is in his hand, and he will thoroughly cleanse his threshing floor, and will gather the wheat into his barn; but he will burn up the chaff with unquenchable fire." (WEB KJV WEY ASV DBY WBS YLT NAS RSV NIV)
Jeremiah 17:27 But if you will not listen to me to make the Sabbath day holy, and not to bear a burden and enter in at the gates of Jerusalem on the Sabbath day; then will I kindle a fire in its gates, and it shall devour the palaces of Jerusalem, and it shall not be quenched. (See NIV)