The interpetation that the woman in Revelation chapter 12 is Mary presents problems for other doctrines catholics hold dear.

For example, in Revelation chapter 12 verse 2, the woman is experiencing birth pain. Where is the origin of birth pain? In Genesis 3:15-16, it started after Eve sinned. Because of her sin, birth pain has been an judgment to every woman. There goes Mary's sinlessness.
Catholics has even attached a title to Mary which is entirely unbiblical and quite shows thier confussion. The title is that Mary is the new Eve. But Adam came first, then Eve, but Mary was before Yehoshua and not after. From evidence in the Bible, Mary is not the second Eve, Yehoshua's church is the second Eve.

Then in Revelation 12:17, the woman has children. A catholic will try to defend his or her doctrine of Mary being a perpetual virgin by saying that she is the mother of the church. There a few scriptures that rattles that justification.
Yehoshua said in Matthew 12:48-50 that HIS mother, brothers, and sisters are they that hear the word of God and do it.
Paul says in Galatians, "But Jerusalem which is above is free, which is the mother of us all." [Galatians 4:26 ]

Catholic's own interpretation of Revelation 12 causes problems to their other fundamentally believed doctrines.

"For the Son of Man is not come to destroy men's lives, but to save them." [Luke 9:56] The Truth About Islam: www.answering-islam.org www.geocities.com/queball23/ISALLAHREALLYGODORELOHIM.html www.islamreview.com The Truth About Catholicism www.ntrmin.org