There are many opposing interpretations of the Biblical doctrine of hell ...
That is because they allow themselves to "interpret" (which is private interpretation; 2 Pet. 1:20), rather than allow God to do so in the word itself (Gen. 40:8; Isa. 28:10,13). It is the author of any material that defines the words and uses, not the readers.
Hell, in scripture, is for the most part, simply the grave. The lake (sea) of fire is annihilation of the lost, for they "perish" (Jhn. 3:16) -
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Isa_14:15 Yet thou shalt be brought down to hell, to the sides of the pit.
Eze_31:16 I made the nations to shake at the sound of his fall, when I cast him down to hell with them that descend into the pit: and all the trees of Eden, the choice and best of Lebanon, all that drink water, shall be comforted in the nether parts of the earth.
Psa_30:3 O LORD, thou hast brought up my soul from the grave: thou hast kept me alive, that I should not go down to the pit.
Pro_1:12 Let us swallow them up alive as the grave; and whole, as those that go down into the pit:
Notice, there is no place for the finally impenitent to exist, which is a parallel to Daniel 2:35
Rev_20:11 And I saw a great white throne, and him that sat on it, from whose face the earth and the heaven fled away; and there was found no place for them.
Dan_2:35 Then was the iron, the clay, the brass, the silver, and the gold, broken to pieces together, and became like the chaff of the summer threshingfloors; and the wind carried them away, that no place was found for them: and the stone that smote the image became a great mountain, and filled the whole earth.
Eze_28:19 All they that know thee among the people shall be astonished at thee: thou shalt be a terror, and never shalt thou be any more.
The "them" (Rev. 20:11) refers back to the previous verses (Rev. 20:7-10) lost 'peoples'.
Psa_37:20 But the wicked shall perish, and the enemies of the LORD shall be as the fat of lambs: they shall consume; into smoke shall they consume away.
Mal 4:1 For, behold, the day cometh, that shall burn as an oven; and all the proud, yea, and all that do wickedly, shall be stubble: and the day that cometh shall burn them up, saith the LORD of hosts, that it shall leave them neither root nor branch.
Mal 4:3 And ye shall tread down the wicked; for they shall be ashes under the soles of your feet in the day that I shall do this, saith the LORD of hosts.