And whoever may speak a word against the Son of Man it shall be forgiven to him, but whoever may speak against the Holy Spirit, it shall not be forgiven him, neither in this age, nor in that which is coming. Matthew 12:32
If therefore the next state (conformably to the common mode of thinking) is a state of punishment, not intended for the cure of the patients themselves, but to satisfy the justice of God, and give warning to others, it is impossible all men should be finally saved. Whereas if the state is a state of discipline, designed for the amendment of the sufferers themselves as well as the good of others, and wisely adapted as a mean to this end, they may be recovered, and formed to meetness for immortality and honor. Or, should any so sunk their natures in this as not to be capable of a recovery in the next state; a state beyond that may be again a state of discipline, wherein misery will be inflicted with a salutary view. Upon which supposition, their recovery will be still possible; they may, in the end, become the capable subjects of happiness. And that this will be the operation of the scheme of God, with reference to the whole human kind, as it is set forth in the scriptures (the effect whereof will finally be the accomplishment of their salvation) we shall see more reason to believe, in the progress of this attempt, than we may, at present be ready to imagine.
Charles Chauncy, The Mystery Hid From Ages, 1784