If it is true that God will prefer things better in the New Jerusalem—with wiser sinners made pure through the blood of the Lamb—then really, what sense does it make to say it was knowledge that was forbidden (in Gen 2:17)?

But it is not that holy wisdom that was forbidden. Moreover, eating of the tree hardly gave Adam and Eve that knowledge. It only made them lose their innocence; it made them aware of their self-chosen responsibility for themselves and rebellion from God. But more on that later.