And with this you answer your own OP! He did not “truly” understand!Regeneration comes about when God perceives a true faith
So even in your understanding he did not meet the requirement that would bring about regeneration!
Good point! Therefore he does not meet the requirements of regeneration from either system!if he was truly regenerate could he fall away ?
And your acknowledgment that he did not become regenerate proves that even you don’t believe he truly understood in a saving way... even according to your own system!You will say no as a Calvinist
Answer: He did not understand!so how without regeneration was he able to understand the word of the kingdom enough to be persecuted for it
You answered your own OP above!
Therefore a Calvinist would explain this by saying he was never regenerated!
He did not understand in a way that was consistent with regeneration... or he would not have fallen away!