Hmm. First death is a physical death. Second death is a spiritual death. As best as I’ve been able to glean, that death is being thrown into fire everlasting. It wouldn’t make sense to be “destroyed” if the fire was everlasting.
The unsaved man or woman since Adam and Eve fell is already “ Spiritually dead “.
Actually that makes complete sense. Suppose the Lake of Fire is the sun and while all of us save are in Heaven or in the New Jerusalem we look at the sun as a reminder of the consequences of sin and be thankful as opposed to looking at the sun and knowing that loved ones and others are there suffering forever and ever and ever. I certainly couldn’t enjoy Heaven knowing that.
Think about this, the wages of sin is death and Christ suffered that, but only for a brief time, However is the wages of sin is eternal torment, then Christ didn’t suffer that or pay that price.
No, the Bible isn’t as complicated as some people want to make it. Just like John 3:16 says there is eternal life with Christ but without him there is death. What is death? The ENDING of life. Revelation talks about the second death and that is the ending of the existance, the life of the souls of the unbelievers.
The ONLY ones who may suffer forever and ever as spoken of in Revelation is Satan, the anti-christ, and the false prophet, but that is probably because they have a demonic soul.