That’s a good start, but it still doesn’t get us across the finish line. One might respond that it demonstrates that, during our era – that is, prior to eternity – no souls are destroyed,*** but that it doesn’t prove that all souls live eternally in the eschaton***.
Let me try and deal with the eternal destiny of souls both just and condemned using the Final Judgement described in Mt. 25:
31 When the Son of man shall come in his glory, and all the holy angels with him, then shall he sit upon the throne of his glory:
32 And before him shall be gathered all nations: and he shall separate them one from another, as a shepherd divideth his sheep from the goats:
33 And he shall set the sheep on his right hand, but the goats on the left.
34 Then shall the King say unto them on his right hand, Come, ye blessed of my Father, inherit the kingdom prepared for you from the foundation of the world:
35 For I was an hungred, and ye gave me meat: I was thirsty, and ye gave me drink: I was a stranger, and ye took me in:
36 Naked, and ye clothed me: I was sick, and ye visited me: I was in prison, and ye came unto me.
37 Then shall the righteous answer him, saying, Lord, when saw we thee an hungred, and fed thee? or thirsty, and gave thee drink?
38 When saw we thee a stranger, and took thee in? or naked, and clothed thee?
39 Or when saw we thee sick, or in prison, and came unto thee?
40 And the King shall answer and say unto them, Verily I say unto you, Inasmuch as ye have done it unto one of the least of these my brethren, ye have done it unto me.
41 Then shall he say also unto them on the left hand, Depart from me, ye cursed, into everlasting fire, prepared for the devil and his angels:
42 For I was an hungred, and ye gave me no meat: I was thirsty, and ye gave me no drink:
43 I was a stranger, and ye took me not in: naked, and ye clothed me not: sick, and in prison, and ye visited me not.
44 Then shall they also answer him, saying, Lord, when saw we thee an hungred, or athirst, or a stranger, or naked, or sick, or in prison, and did not minister unto thee?
45 Then shall he answer them, saying, Verily I say unto you, Inasmuch as ye did it not to one of the least of these, ye did it not to me.
46 And these shall go away into everlasting punishment: but the righteous into life eternal.
Those on the right hand are the just those on the left the condemned. Each of these is assigned an eternal destiny. One of reward the other of punishment. Our understanding of rewarding and punishing requires that these terms have an object. In the context of the above scripture this object is Man and of course with his soul.
If rewarding and punishing are to be dealt eternally than their objects must also exist eternally with them and not suffer destruction.
Therefore Man’s soul will exist eternally after the final judgement.
In the same vein the prophesy of Daniel fortells the resurrection and the fate of the just and the damned:
Dan 12:1 And at that time shall Michael stand up, the great prince which standeth for the children of thy people: and there shall be a time of trouble, such as never was since there was a nation even to that same time: and at that time thy people shall be delivered, every one that shall be found written in the book.
2 And many of them
that sleep [N.B. are not destroyed] in the dust of the earth shall awake, some to everlasting life, and some to shame and everlasting contempt.
Mike