ealgeone:
I recognize you don’t accept the theological implications for that passage as it relates to Mary, That is fine. But to say the rendering of Saint Jerome is inaccurate is an inaccurate statement. The passage itself does hint that Mary was Graced by God in a unique way before Christ died and rose from the Dead, which where God’s Grace that saves flows from or comes from. Now how Catholic Doctrine understood this to mean Mary was preserved from Sin by God’s Grace, that goes beyond just this passage although it is part of the Scriptural basis, not only 1, for the Doctrine.
Does God know the future? Yes.
Did He pick Mary for this? Yes.
Does this mean she is sinless? No.
The catholic perspective on this contradicts the NT teaching all have sinned. Everybody not named Jesus.
Again to understand the perfect it has to be viewed from the perspective of the speaker/writer.