To answer your question,I think the thing to remember is that the soul and spirit should not be understood as being one.In other words,do not equate soul and spirit,instead,equate "breath and spirit".
The spirit is what gives life to the soul by way of breath.Please read here
Genesis 2:7 King James Version (KJV)
7 And the Lord God formed man of the dust of the ground, and breathed
into his nostrils the breath of life; and man became a living soul.
The breath of life belongs to the Lord and the Lord can demand it back at any time which is evident in,
Luke 12:20-21 New International Version (NIV)
20 “But God said to him, ‘You fool! This very night your life will be
demanded from you. Then who will get what you have prepared for
21 “This is how it will be with whoever stores up things for
themselves but is not rich toward God.”
And again in the following text.
Ecclesiastes 12:7 New International Version
and the dust returns to the ground it came from,
and the spirit returns to God who gave it.
(No mention of the soul returning to the Lord in the above text.)
It would appear that when the breath of life is given to the soul that the life-blood is given instantaneously.The soul then becomes "flesh".
Every living human being on the planet has received the "breath of Life",and sooner or later that spirit is going to be given back to the Lord.Then we will return to the substance we were originally formed from.
What happens after we die? We return to dust. According to scripture it is written,
Daniel 12:2 New International Version (NIV)
2 Multitudes who sleep in the dust of the earth will awake: some to
everlasting life, others to shame and everlasting contempt.
So the answer to your question it is evident in the above text.The soul (good or bad) is again given the breath of life, when we are judged at the day of judgement.If the soul does not please the Lord,then the Lord has the power (unlike man) to destroy both the resurrected soul and body.Notice there is no mention of the spirit being destroyed because the spirit (breath of life) returns to the Lord.
"If He should determine to do so, If He should gather to Himself His
spirit and His breath, All flesh would perish together, And man would
return to dust.
Revelation 20:13-14 New International Version (NIV)
13 The sea gave up the dead that were in it, and death and Hades gave
up the dead that were in them, and each person was judged according to
what they had done. 14 Then death and Hades were thrown into the lake
of fire. The lake of fire is the second death.
After the first death comes the judgement resurrection and it is at this point in time that the Lord has the power to throw the sinful soul and body into the lake of fire.The body and soul will be returned to dust by way of fire,in the same way a body is cremated at a funeral.This is the second death.
One thing to consider is not all souls go to Hades, or so i am led to believe when i study this please read here
Revelation 6:9-11 New International Version (NIV)
When he opened the fifth seal, I saw under the altar the souls of
those who had been slain because of the word of God and the testimony
they had maintained. 10 They called out in a loud voice, “How long,
Sovereign Lord, holy and true, until you judge the inhabitants of the
earth and avenge our blood?” 11 Then each of them was given a white
robe, and they were told to wait a little longer, until the full
number of their fellow servants, their brothers and sisters, were
killed just as they had been.
These souls have (i think), been given the breath of life because they are able to speak and they are also given a white robe,which would imply they are flesh.Probably,this is the reason John can see these souls under the alter.
1 Thessalonians 5:23-24 New International Version (NIV)
23 May God himself, the God of peace, sanctify you through and
through. May your whole spirit, soul and body be kept blameless at the
coming of our Lord Jesus Christ. 24 The one who calls you is faithful,
and he will do it.
1 Corinthians 15:51-52 New International Version (NIV)
51 Listen, I tell you a mystery: We will not all sleep, but we will
all be changed— 52 in a flash, in the twinkling of an eye, at the last
trumpet. For the trumpet will sound, the dead will be raised
imperishable, and we will be changed.