Roman Catholicism and their error of worshiping Mary

• Mary
• The Exaltation of Mary
• Did Mary have other children?
• Mary's Virginity and Matt. 1:25
• Mary, full of grace, and Luke 1:28
• Mary as the subject of preaching and worship
• A Litany of the Blessed Virgin Mary
• The Bodily Assumption of Mary
• Roman Catholicism, Mary, and Idolatry
• Roman Catholicism, Comparing Mary to God

Another reason why I would not consider RCs as fellow brothers/sisters in Christ. For one, they believe a totally different gospel which by itself excludes them from being part of the church of Christ (in spite of their insistence to the contrary).

http://carm.org/roman-catholicism

http://carm.org/gospel-roman-catholics