Miss_S opinion on Calvins and Armeneans :
The bottom line is that I will not be trying to reconcile the Calvins' and Armeneans' points of view - I simply believe that both are right for the most part, but in their battle some false beliefs have creeped in. I believe in the Great Commission and don't believe in limited atonement, but I also believe in the sovereignty of God over all things. The Bible itself points out some false beliefs people have believed about God's sovereignty, which should say something about our capacity to understand it.
Be very careful with this! Frequently those advocating tolerance for beliefs are often those advocating wrong ones. Christianity by nature is very "intolerant" and "exclusive" - there is only one right way to God. "I AM the way, the truth, and the life" (John 14:6) Thus anyone who advocates "tolerance" for wrong beliefs or any sort of equality between religions or belief systems is actually attacking your Christian faith in attempt to say that it's wrong. (Them coexist posters are EVIIILLLLL! eeeeevvvvviiiiil! )
Now that doesn't mean that we should respond to such an attack by striking back or being jerks about our faith. But make no mistake - it is an attack. Be very gentle in responding to people who talk about your faith this way, for they likely have a long history of jerk Christians who responded to them in bad ways. Above all, these people need extra love and living proof that your life is truly different from what any other belief can provide. And pray for strength to bite your tongue, because "That's just what YOU believe" is truly an insult against the real hope that you have in your heart. Be gentle, yes, but never give in - that statement is a defense for beliefs that person has that are truly wrong, and it's designed to make you angry so that person can accuse you of being an intolerant jerk. Do not give them that chance.
Now I should point out that I believe that there are Catholics who are truly saved - they do have the book of Romans too, after all. The argument would be over authority and details of the sanctification process, and I really think that should be handled on a point-by-point basis if it even comes up at all. I see no point in blanketly shouting "Catholics are wrong!" at the wall because all it does is alienate Catholics from discussion, debate, argument, etc and does not accomplish anything productive in the realm of thought. Whereas saying that "I'm willing to hear your argument and provide scriptural counterpoint" is. But at the end of the day, there is one truth, and it does not contradict itself, because then it wouldn't be the truth.
However, given that neither @Hans_Oddcraft, @Matt_Bonnetfolly1, or you have resorted to insulting one another, I see no reason to worry.