And that servant, which knew his lord's will, and prepared not himself, neither did according to his will, shall be beaten with many stripes. But he that knew not, and did commit things worthy of stripes, shall be beaten with few stripes. For unto whomsoever much is given, of him shall be much required: and to whom men have committed much, of him they will ask the more.
Ye have not yet resisted unto blood, striving against sin. And ye have forgotten the exhortation which speaketh unto you as unto children, My son, despise not thou the chastening of the Lord, nor faint when thou art rebuked of him: For whom the Lord loveth he chasteneth, and scourgeth every son whom he receiveth. If ye endure chastening, God dealeth with you as with sons; for what son is he whom the father chasteneth not? But if ye be without chastisement, whereof all are partakers, then are ye bastards, and not sons. Furthermore we have had fathers of our flesh which corrected us, and we gave them reverence: shall we not much rather be in subjection unto the Father of spirits, and live? For they verily for a few days chastened us after their own pleasure; but he for our profit, that we might be partakers of his holiness. Now no chastening for the present seemeth to be joyous, but grievous: nevertheless afterward it yieldeth the peaceable fruit of righteousness unto them which are exercised thereby. Wherefore lift up the hands which hang down, and the feeble knees; And make straight paths for your feet, lest that which is lame be turned out of the way; but let it rather be healed.
My son, despise not the chastening of the Lord; neither be weary of his correction: For whom the Lord loveth he correcteth; even as a father the son in whom he delighteth.
And unto the angel of the church of the Laodiceans write; These things saith the Amen, the faithful and true witness, the beginning of the creation of God; I know thy works, that thou art neither cold nor hot: I would thou wert cold or hot. So then because thou art lukewarm, and neither cold nor hot, I will spue thee out of my mouth. Because thou sayest, I am rich, and increased with goods, and have need of nothing; and knowest not that thou art wretched, and miserable, and poor, and blind, and naked: I counsel thee to buy of me gold tried in the fire, that thou mayest be rich; and white raiment, that thou mayest be clothed, and that the shame of thy nakedness do not appear; and anoint thine eyes with eyesalve, that thou mayest see. As many as I love, I rebuke and chasten: be zealous therefore, and repent. Behold, I stand at the door, and knock: if any man hear my voice, and open the door, I will come in to him, and will sup with him, and he with me. To him that overcometh will I grant to sit with me in my throne, even as I also overcame, and am set down with my Father in his throne. He that hath an ear, let him hear what the Spirit saith unto the churches.
It is the same class of servant, all of which are not ready, with differing degrees of iniquity/unworthiness, and thus differing degree of punishment. As said, the only place mentioned in this parable is with the lost. You are using the difference in the degree of punishment in order to read a temporary place of punishment that would make them fit for Heaven, but which is simply not in the text. Give it up.
For whom the Lord loveth he chasteneth, and scourgeth every son whom he receiveth.
And which reformable or purifying experience (which 1Co 3 is not) for believers always takes place in this life with its trials and temptations - as can be shown (even the Lord was "perfected"/completely victoriously tested in all points here) - with the only alternative being that of being lost:
But when we are judged, we are chastened of the Lord, that we should not be condemned with the world. (1 Corinthians 11:32)
As many as I love, I rebuke and chasten: be zealous therefore, and repent.
Indeed, and only those who overcome/persevere in faith in this life will realize eternal life:
He that hath an ear, let him hear what the Spirit saith unto the churches; He that overcometh shall not be hurt of the second death. (Revelation 2:11)
He that overcometh, the same shall be clothed in white raiment; and I will not blot out his name out of the book of life, but I will confess his name before my Father, and before his angels. (Revelation 3:5)
What you are doing is trying to use the principle of punishment to read purgatory into a text in which nothing is said of a place of reformation or purifying, but only that of being condemned with the world. Again, give it up as it simply is not there and never will be no matter how much you may want to read it into the text.