they would not know sin (,I.E., committing ) because Adam and Eve pass the test.
God bless
I don’t see this as correct. The objection Thomas Aquinas was answering wasn’t “if Adam and Eve had not sinned,” it was “if man had not sinned,” and to that objection, Aquinas’ answer is correct.
But just because Adam and Eve had not sinned (hypothetically) doesn’t mean any of their descendants wouldn’t have have sinned either.
Each person is created with free will and intellect. Each person, then, would be responsible for their own choice, much as they are today. The difference would be that of Original Sin and concupiscence. Adam and Eve were the first humans, parents to all humanity. Thus, they condemned the house (humanity) by their sin. This position is unique to them, and the consequences of their descendants sinning would then be different.
If any man had ever sinned (even if Adam and Eve had not), then Christ might still have been incarnate in order to bring salvation to that particular group of humanity that had fallen, even if not all of humanity had. There is a question among Catholic theologians today regarding the significance of Christ to
possible sentient extraterrestrial creatures who
possibly may be in a pre-fall state. The answer is that, pre-fallen or not, Christ came for
fallen humanity. If a sentient extraterrestrial race had also fallen, Christ’s salvific act would only apply to fallen humanity. We might expect Christ to incarnate for their race also, but the man Jesus Christ came for fallen humanity only.
In a similar vein, we might think about two groups of humanity, one fallen and one not, and Christ incarnating to save the fallen.
Another question one might consider, though, is that of Adam and Eve’s preternatural immortality. If Adam and Eve had not fallen when they did, would they have lived forever on Earth, or would they have at some point gone to Heaven? It’s an important question, because unlike the Angels, who had a singular moment to decide their eternity, humanity isn’t like that. If Adam and Eve had lived for millennia, had several, dozens, hundreds, or thousands of children, the possibility of their fall would still exist. They could conceivably have chosen to sin even after millennia of obedience. For that matter, we have no knowledge of how long they
did live before they fell.