I’m sorry. Perhaps I’m misunderstanding you. Are you saying the sermons of the APostles did not exist before 100 AD?
We don't have copies of the sermons or conversations he had outside of the New Testament.
When Paul was writing to the church at Rome....why didn't he carve out an exception for Mary regarding all have sinned?
Have you ever wondered why he didn't? Because he knew she was a sinner.
Why didn't Luke come right out and say that Mary was sinless? Because he knew she was a sinner.
That's why such much of what Rome teaches about Mary is rejected by Christianity. It's not found in the NT.