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and the devil who had deceived them was thrown into the lake of fire and sulfur where the beast and the false prophet were, and they will be tormented day and night forever and ever.--Revelation 20:10
(1) Then Jonah prayed unto the LORD his God out of the fish's belly,
(2) And said, I cried by reason of mine affliction unto the LORD, and he heard me; out of the belly of hell cried I, and thou heardest my voice.
(3) For thou hadst cast me into the deep, in the midst of the seas; and the floods compassed me about: all thy billows and thy waves passed over me.
(4) Then I said, I am cast out of thy sight; yet I will look again toward thy holy temple.
(5) The waters compassed me about, even to the soul: the depth closed me round about, the weeds were wrapped about my head.
(6) I went down to the bottoms of the mountains; the earth with her bars was about me for ever: yet hast thou brought up my life from corruption, O LORD my God.
Jonah was only in the belly for 3 days but verse 6 says that it was forever
Jude 1:7
(7) Even as Sodom and Gomorrha, and the cities about them in like manner, giving themselves over to fornication, and going after strange flesh, are set forth for an example, suffering the vengeance of eternal fire.
It says in this verse that Sodom and Gommorrha suffering the vengeance eternal fire but they are not burning now. The punishment is eternal but not the punishing.