The dead experience nothing therefore they don't lose anything. Death doesn't harm the dead.
That is what the WT taught us. But it is not biblical.
Rev. 6 - I saw under the altar the souls of them that were slain for the word of God, and for the testimony which they held: And they cried with a loud voice, saying, How long, O Lord, holy and true, dost thou not judge and avenge our blood on them that dwell on the earth? And white robes were given unto every one of them; and it was said unto them, that they should rest yet for a little season, until their fellowservants also and their brethren, that should be killed as they were, should be fulfilled.
Clearly death doesn't mean annihilation of consciousness like the WT teaches. From the above verse, you can deduce that souls have their original identity (mind), have emotion, & memories.
The definition of death isn't non-existence. It means that the soul and body are separated when the body "sleeps" or stops functioning. That is the biblical definition of death.
The greatest hope of atheists, which they have no empirical data to support: is that when they die, their consciousness will stop. It is a vain, unfounded hope.
Unfortunately, they fail to realize that this was never part of the original design. We were created in the image of an eternal God, that we might fellowship with him forever.
Without Jesus, they will experience eternal separation from God, their second greatest wish.... that is until they actually get what they want. But, then it is too late. Eternal, conscious loneliness (outer darkness.) And, that is a best case scenario. Other scriptures suggest much worse, forever.
Can you definitively prove that:
There is the bible, there are millions of NDE and Terminal Lucidity cases that suggest this. And, I have personal experience that leaves no doubt for me that the soul absolutely can function without the body.