Non catholics have no business refuting something they do not comprehend.
Well said, they need to hear this more often. Of course if they did actually understand Catholic Theology they couldn't stay protestant.
6 I am astonished that you are so quickly deserting the one who called you to live in the grace of Christ and are turning to a different gospel 7 which is really no gospel at all. Evidently some people are throwing you into confusion and are trying to pervert the gospel of Christ. 8 But even if we or an angel from heaven should preach a gospel other than the one we preached to you, let them be under Gods curse! 9 As we have already said, so now I say again: If anybody is preaching to you a gospel other than what you accepted, let them be under Gods curse!