That is a wrong interpretation of the Bible.
Where do you get these false ideas? A pamphlet perhaps?
ALL have sinned and fall short of the glory of God.
The only wrong interpretation is the one that misinterprets the Greek.
Mary wasn’t sinless. She herself admitted that she needed a Savior. SHE acknowledged her sinfulness.
Jesus isn’t so fragile that He needed a sinless mother to carry Him. If that it the case, then Catholics have a really weak Jesus.
"My soul magnifies the Lord, 47 and my spirit rejoices in God my Savior,..."
So... if she was sinless, she didn't need a savior. And if she was sinless, she would have know she was sinless. Yet, she was NOT sinless. All, save one, have been born into sin since Adam's fall. Only Christ was born sinless.
Mary needed a savior. She said so as she praised her Savior.
No "interpretation" needed... it's right there, plainly stated. Seems to me that it takes "interpretation" (and an incorrect one at that) to twist those verses into some heretical trash stating that Mary was sinless.
Hoss