Well, THAT'S a relief! So, would you conclude that the Holy Spirit through Paul was including ALL mankind as under sin? When God says through the prophet in I Kings 8:46, for there is no one who does not sin, did He mean ALL or not? When God says through Moses in Genesis 8:21, even though every inclination of the human heart is evil from childhood, did He not mean all of us? When God says in Ecclesiastes 7:20, Indeed, there is no one on earth who is righteous, no one who does what is right and never sins., did He not mean everyone? I figure you already know about the many Scriptures that condemn all mankind as sinners in need of a Savior, so rather than brush it all off as exaggerated hyperbole, why not start to see our fallen nature as God sees it?
There is no exception for Mary in Scripture and I'm sure, if she was exempted from a sin nature, we would know about it from God's word. Why would He keep that a secret??? Are some people worse sinners than others? Oh, yeah, of course, but we are ALL sinners, we are ALL fallen, we are ALL at enmity with God, we are ALL capable of unthinkable evil given a set of circumstances. God knows that - He made us. So, please stop the nitpicking over words again. Why argue against what Scripture clearly says? Accept the truth for what it is. Without Christ, without the new birth, our hearts are desperately wicked - who can know it? That is what makes grace so awesome!
Apparently not, because right next to that Psalm that St. Paul quotes there is this:
A psalm of David. Lord, who shall dwell in thy tabernacle? or who shall rest in thy holy hill? He that walketh without blemish, and worketh justice: He that speaketh truth in his heart, who hath not used deceit in his tongue: Nor hath done evil to his neighbour: nor taken up a reproach against his neighbours. In his sight the malignant is brought to nothing: but he glorifieth them that fear the Lord. He that sweareth to his neighbour, and deceiveth not; He that hath not put out his money to usury, nor taken bribes against the innocent: He that doth these things shall not be moved for ever. (Psalm 14, your numbering may vary)