the question you failed to answer in Hebrews 10, is why does a saved person needs to pray to have a heart cleansed of a guilty conscience.
Now Hebrew 10 does say the heart will be cleansed of a guilty conscience, but is it also saying guilt remains in the conscience like a blemish. Which reminds you again and again not to do that sin again.
Which is related to the true meaning of purification, that the Catholics call purgatory.
So should purgatory just be called purification, maybe
@CS1 could understand my drift now.
Now what you may not be failing to see, is in order to see an error i have to show the error in the Catholic light to make people see that actually we do need to see purgatory in a different light.