Are the Teachings of the Roman Catholic Church Biblical or deceptively Pagan?

Revelation 18:4-8
" And I heard another voice from heaven, saying, Come out of her, my people, that ye be not partakers of her sins, and that ye receive not of her plagues. For her sins have reached unto heaven, and God hath remembered her iniquities. Reward her even as she rewarded you, and double unto her double according to her works: in the cup which she hath filled fill to her double.

How much she hath glorified herself, and lived deliciously, so much torment and sorrow give her: for she saith in her heart, I sit a queen, and am no widow, and shall see no sorrow.

Therefore shall her plagues come in one day, death, and mourning, and famine; and she shall be utterly burned with fire: for strong is the Lord God who judgeth her.