How do Roman Catholics argue for the sinlessness of Mary in light of Romans 3:23? All I've heard so far is that when some RC apologists argue that other people besides Jesus were sinless (i.e.; Mary, John the Baptist, Jeremiah, etc.) they mention that the passages saying Jesus were sinless do not exclude other people, and really just mean that he's the only one among the few sinless people who could be worshiped and grant atonement. What do you make of this?