Because she was full of grace.
No.
But we have lovely parting gifts.
Why weren’t Mary’s parents’ sin passed on to Mary?
Mary’s “grace” was not the issue. Mary was a virgin .. which was key.
However, the reason Jesus was “sinless” at birth was because of the “BLOOD” flowing in his veins.
It is a medical FACT that the blood of the FATHER is passed to the child. Therefore, Jesus blood was of his FATHER, and not of his mother.
If you go back and look at the history of Jewish sacrifices, you will note that it was always the “blood” of the animals that was important .. meaning that the animal had to be pure and spotless or their blood was not considered pure enough for the sacrifice.
Jesus is our “sacrifice” .. and therefore his BLOOD had to be pure and spotless.
Which grace is on all believers according to Ephesians 1:6. The word *grace in Eph 1:6 is the same word used in Luke 1:28 when the angel addressed Mary.
Ephesians 1:3-10 Blessed be the God and Father of our Lord Jesus Christ, who has blessed us in Christ with every spiritual blessing in the heavenly places, 4 even as he chose us in him before the foundation of the world, that we should be holy and blameless before him. In love 5 he predestined us for adoption as sons through Jesus Christ, according to the purpose of his will, 6 to the praise of his glorious grace, with which he has blessed us in the Beloved. 7 In him we have redemption through his blood, the forgiveness of our trespasses, according to the riches of his grace, 8 which he lavished upon us, in all wisdom and insight 9 making known to us the mystery of his will, according to his purpose, which he set forth in Christ 10 as a plan for the fullness of time, to unite all things in him, things in heaven and things on earth.