I don’t know what you mean.
"Invincible ignorance, whether of the
law or of the fact, is always a valid excuse and excludes
sin. The evident reason is that neither this state nor the act resulting therefrom is
voluntary. It is undeniable that a man cannot be invincibly ignorant of the
natural law, so far as its first principles are concerned, and the inferences easily drawn therefrom. This, however, according to the teaching of
St. Thomas, is not
true of those remoter conclusions, which are deducible only by a process of laborious and sometimes intricate reasoning. Of these a
person may be invincibly ignorant. Even when the invincible ignorance is concomitant, it prevents the act which it accompanies from being regarded as
sinful. The perverse temper of
soul, which in this case is supposed, retains, of course, such malice as it had.
...
Invincible ignorance, whether of the
law or fact, exempts one from the penalty which may have been provided by positive legislation. "
https://www.newadvent.org/cathen/07648a.htm
Some of the proof texts based on principle in the text. A type of Midrash is used that I forget what it was called.
2 Samuel 19:19
And said unto the king, Let not my lord
impute iniquity unto me, neither do thou remember that which thy servant did perversely the day that my lord the king went out of Jerusalem, that the king should take it to his heart.
Psalm 32:2
Blessed is the man unto whom the Lord
imputeth not iniquity, and in whose spirit there is no guile.
Romans 4:8
Blessed is the man to whom the Lord will not
impute sin.
Romans 5:13
Good News Translation
There was sin in the world before the Law was given; but where there is no law, no account is kept of sins.
Romans 2:13-15
Good News Translation
13 For it is not by hearing the Law that people are put right with God, but by doing what the Law commands. 14 The Gentiles do not have the Law; but whenever they do by instinct what the Law commands, they are their own law, even though they do not have the Law. 15 Their conduct shows that what the Law commands is written in their hearts. Their consciences also show that this is true, since their thoughts sometimes accuse them and sometimes defend them.
Note: Their heart also accuses them too.