Your quote-o-rama does not speak to the question of Mary, dear.
.The Bible DOES speak to the issue of Mary.
IT DOES NOT however even suggest that she was sinless.
During my bible study this morning in Romans, I came across this verse.
Romans 8:34
Who is he that condemneth?
It is Christ that died, yea rather,
that is risen again,
who is even at the right hand of God,
who also maketh intercession for us.
So I did a quick word study of intercession.
The five verses in the NT which use the word speak only to Christ and the Holy Spirit making intercession for us.