Choose the Bible - as your basis for doctrine
Matt 18
32 Then summoning him, his lord *said to him, ‘You wicked slave, I forgave you all that debt because you pleaded with me. 33 Should you not also have had mercy on your fellow slave, in the same way that I had mercy on you?’ 34 And his lord, moved with anger, handed him over to the torturers until he should repay all that was owed him. 35 My heavenly Father will also do the same to you, if each of you does not forgive his brother from your heart.”
Romans 11
19 You will say then, “Branches were broken off so that I might be grafted in.” 20 Quite right, they were broken off for their unbelief, but you stand by your faith. Do not be conceited, but fear; 21 for if God did not spare the natural branches, He will not spare you, either. 22 Behold then the kindness and severity of God; to those who fell, severity, but to you, God’s kindness, if you continue in His kindness; otherwise you also will be cut off. 23 And they also, if they do not continue in their unbelief, will be grafted in, for God is able to graft them in again.
1 Cor 6
9 Or do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived; neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor homosexuals, 10 nor thieves, nor the covetous, nor drunkards, nor revilers, nor swindlers, will inherit the kingdom of God. 11 Such were some of you; but you were washed, but you were sanctified, but you were justified
Well first of all I agree that we do not lose salvation each time we sin after we are saved/born-again. But that is not the issue in Matthew 18 (for example). As we both probably know.
In Matthew 18 we have "full forgiveness" I forgave you all that debt because you pleaded
Matt 18
32 Then summoning him, his lord *said to him, ‘You wicked slave, I forgave you all that debt because you pleaded with me. 33 Should you not also have had mercy on your fellow slave, in the same way that I had mercy on you?’ 34 And his lord, moved with anger, handed him over to the torturers until he should repay all that was owed him. 35 My heavenly Father will also do the same to you, if each of you does not forgive his brother from your heart.”
In Matthew 18 we have full "forgiveness revoked" not merely the debt for the new transgression but ALL the previous debt.
34 And his lord, moved with anger, handed him over to the torturers until he should repay all that was owed him
And then worst of all we have Christ speaking outside of the parable to His fully forgiven followers saying this --
Matt 18
35 My heavenly Father will also do the same to you, if each of you does not forgive his brother from your heart.”
"The SAME" in this case - refers to the "full forgiveness revoked" act in vs 34.. as we both see.
That is an irrefutable problem for OSAS.
Here is a point where apparently we both agree. vs 35 is very obvious in referring to the action of vs 34 this is irrefutable and would be taken gladly if one did not have an a priori directive that would not allow it.
Before we got too far from the text.
Matt 18
34 And his lord, moved with anger, handed him over to the torturers until he should repay all that was owed him. 35 My heavenly Father will also do the same to you, if each of you does not forgive his brother from your heart.”
"Do the same" can only reference the "doing" that we see in vs 34. This is irrefutable
not true at all.
We can for the sake of clarity - change the text to make it purgatory this way.
Matt 18
The servant owed a few weeks wages..34 And his lord, moved with anger, handed him over to the torturers until he should repay all that was owed him and then let him out with all debts settled - restored to favor.
But the chapter says the servant owed more than it was even possible for him to pay and still live - more than a life time.
This in the actual text "repay all" would be fatal. You have "inserted" the idea that possibly the story is leading the reader to think that it was survivable. But the chapter is very careful to point out that it was more than he could pay in his lifetime.
Your suggestion requires that we ignore that key detail. The sin debt of the sinner is more than the sinner can afford to pay -- he will not survive. The "I forgave you ALL" is a reference for us - to God forgiving us for all our sins. None of this is of the form " or you could also go to heaven if you pay your own sins". No "nice heaven" is being offered even in symbol to the servant who has his forgiveness revoked. The parable only offers him torture..
; because, to follow this example, the man was only in torment "till he should pay all that was due unto him."
To be honest nothing in the actual chapter even remotely directs the reader that direction.
We could for the sake of clarity edit the chapter to insert the idea you have suggested.
33 and so his fellow servants were unhappy with him - so also was the king and he had to endure their displeasure for a while. 34 So you too if you do not forgive others will have to endure the unhappy feelings of others for a short while.
Nothing at all of that sort is actually in the chapter as we both probably know.
The difference is I don't have a framework for the Gospel and salvation that would require me to try to re-imagine the text out to that extreme level so as to assist me in much-needed inserted inference.