[Alex Murphy]

Why weren’t Mary’s parents’ sin passed on to Mary?

[Mrs. Don-o]

We don't know the "how" but we know the "why": because she was to be Kecharitomene.

This I know.

For the Bible tells me so.

[Vermont Lt]

Because she was also conceived Immaculately (the feast of the Immaculate Conception is Mary’s day, not Jesus.)

So, Mary was born free of sin, and conceived Jesus without sin, since she was a virgin.

Voila—baby, conceived without sin.