ANNALEX: The scriptures that assert something similar have a narrower context, and there are scriptural examples of perfection and righteousness besides Jesus.
Oh, dear. And this is where we end up. Thank God for the Reformation.
Post Tenebras, Lux.
""...if anyone makes the assistance of grace depend on the humility or obedience of man and does not agree that it is a gift of grace itself that we are obedient and humble, he contradicts the Apostle who says, "What have you that you did not receive?" (1 Cor. 4:7), and, "But by the grace of God I am what I am" (1 Cor. 15:10). (Council of Orange: Canon 6)
Noah and Jacob, for example, are described one as righteous another as perfect. By reason we know that infants are likewise free form personal sin.
It is true that all righteousness and perfection, of Mary or anyone else, is a gift from God, just like the Council of Orange teaches.