Say to the brothers Hulet and to all others, that the Lord never authorized them to say that the devil, his angels or the sons of perdition, should ever be restored; for their fate of destiny was not revealed to man, is not revealed, nor ever shall be revealed, save to those who are made partakers thereof: consequently those who teach this doctrine, have not received it of the Spirit of the Lord. Truly Brother Oliver declared it to be the doctrine of devils. We therefore command that this doctrine be taught no more in Zion. We sanction the decision of the Bishop and his council, in relation to this doctrine being a bar to communion. (DHC 1:366)
The principle opposite to that of eternal increase from the beginning, leads down to hell; the person decreases, loses his knowledge, tact, talent, and ultimately, in a short period of time, is lost; he returns to his mother earth, his name is forgotten. But where, Oh! Where is his spirit? I will not now take the time to follow his destiny; but here, strong language could be used, for when the Lord Jesus Christ shall be revealed, after the termination of the thousand years' rest, he will summon the armies of heaven for the conflict, he will come forth in flaming fire, he will descend to execute the mandates of an incensed God, and, amid the thunderings of the wrath of Omnipotence, roll up the heavens as a scroll, and destroy death, and him that has the power of it. The rebellious will be thrown back into their native element, there to remain myriads of years before their dust will again be revived, before they will be reorganized. Some might argue that this principle would lead to the reorganization of Satan, and all the devils. I say nothing about this, only what the Lord says - that when he comes, "he will destroy death, and him that has the power of it." It cannot be annihilated; you cannot annihilate matter. If you could, it would prove there was empty space. If philosophers could annihilate the least conceivable amount of matter, they could then prove there was the minutest vacuum, or empty space; but there is not even that much, and it is beyond the power of man to prove that there is any.