Consequently, the “outer darkness” is not a description of hell or a place of punishment,
like the Catholic’s use of the term “purgatory” (see pages 63-64, KPG),
but a place of restoration, renewal and reinstruction in the ways of the Lord.
That's the same thing Rome teaches on purgatory 
(you are bannished to a dark place and eventually released)
God does not punish His own; His desire is that all His children be reestablished in holiness. The Millennium is the time the Lord will accomplish this. (We’ll speak more about this chastening in a moment.) The Bible does not say how long an individual might be in this place of restoration, but this certainly does encourage us to be wise and heed our accountability here and now. “Fruit” does matter to the Lord.
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