The only creature ever addressed as
FULL OF GRACE!
If something is full, there is no room for anything else; a soul full of grace has no room for even original sin you see.
God is specific about many things. In the Old Testament, we can see all the details as to the Ark of the Covenant which carried manna and the Torah and commandments. Well Our Lady, Mary, carried the very Son of God!
Do we suppose that God is less careful in the womb that would bear the Incarnate Word?
COULD God make Mary sinless from the first moment of her conception?
Would it seem fitting for Him to do so?
Then it is not a stretch to believe that this is exactly what He did!
Hail Jesus, Full of Grace.
Acts 6:8 (Amplified Bible)
Amplified Bible (AMP)
Now Stephen, full of grace (divine blessing and favor) and power (strength and ability) worked great wonders and signs (miracles) among the people.
Sure, God COULD do anything, but the question is “Did it really happen?”
This is the same argument the Mormons use regarding Joseph Smith: “Don’t you believe God could have spoken to Joseph Smith?” And when you say “I cannot limit an omnipotent God.” They say “Well there you go.” As though possibility is proof. It isn’t.
If something is full, there is no room for anything else; a soul full of grace has no room for even original sin you see.
"Mercy" is God not giving you what you deserve.
"Grace" is God giving you what you do not deserve.
Does that clear things up a bit?