I could say that ipso facto by possession of original sin one has sinned by the very fact they posess this sin to begin with. Furthermore you point seems to me to an example of absolute biblical literalism, that everything is exactly as its written. For example one could argue that simply by saying all have sinned its a general statement about humanity in general and that it would of been rather pointless to say that All have sinned except Christ (who is FULLY human in addition to being fully God) and Mary who had sin removed at the moment of conception.
Christ obviously doesn't count though, since this is specifically stated that he never sinned (If I really need to dig for references, I will.)
On the other hand, any evidence of Mary's perfection is found only in Catholic tradition. There is absolutely no mention of it in Scripture. If Mary is as important as Catholics claim, why is this NEVER mentioned?
I don;t think you understand my point. The salvation is not what makes a man new rather its the end result of one who continues on the path of sanctification. Rather the New man is one who is christian as his soul is ontologically changed even if he is in the gravest depths of sin. Its like a priest, his soul is ontologically changed by his concecration so even if he is defrocked and dismissed from public ministry that priestly nature is still intrinsic to his being.
So no man is "In Christ" until his death? To me this seems very odd. So basically then nobody would be "Saved" until the end of his life, according to Catholic doctrine.
Acts 16:31 "Believe on the Lord Jesus Christ and thou shalt be saved."
At THE MOMENT of belief, the person is saved.
As to Hebrews six, this is easily interpreted as referring to teh unforgivable sin blasphemy against the Holy Spirit, or genuine unbelief as it is often called. One who through genuine unbelief and faithlessness rejects God and the Holy Spirit, rejects the very means of salvation and thus cannot be saved as God respects the individuals choice ceasing the flow of grace to the soul of the one who has commited the unforgivable sin.
What IS genuine unbelief in your opinion? That said, interpreting it as talking about the unpardonable sin is reasonable I guess. And to extend upon that, what IS the unpardonable sin to Catholics? And can someone, in your view, ever commit the unpardonable sin and then wish for Salvation? Or would such a person never again have any desire for Salvation?
Furthermore considering as you freely admitted you have no good answer to John 20:23 you see how your understanding of new man is flawed. Your equating salvation the end result with the ontological mark of a christian which is a source of spiritual strength and sanctifying grace and indeed makes one a new man in Christ the Lord.
Actually, me admitting I didn't have a good answer handy admits exactly that, and no more than that.
Naturally Christ came to atone for man I never said he exclusively came to establish the Catholic Church. As to your claim he established the Christian Church that is true. He did establish the Christian Church because originally the only christian church was the Catholic Church. If he came to establish a bunch of separate contradictory and argumentative denominations I hardly think he would have prayed that we be ONE, nor would he of warned about heresy and false shepherds. (although of course you would hardly think various deviations of opinion in protestantism constitute that do you, since protestantism rejects on a basis the principle of authority )
My belief is that there is a difference between disagreement and heresy. Disagreement on things which aren't clear isn't heresy (Even Catholicism admits this as Catholics do have different opinions.)
Also, I wouldn't claim that God established all the Protestant Churches, obviously they were established by men (And, BTW, so was the Catholic Church.) And as I have explained to you several times now, I do not think every Protestant Church is equally accurate. I think some are more wrong than others, and I believe at the end of the day, on a given doctrinal issue, only one position can be right. I just think God left room for disagreement on some issues to make us think.
And I don't always assume Protestants are in good shape. Liberal churches like the Episcopal Church and some Lutheran churches are no doubt just as off base, if not more so, than the Catholic Church.
As to further definition to say they deviated is again to deny the promises of Christ that the gates of hell would not prevail against his Church, by definition this includes the security against doctrinal error. Either way in furhter developing its doctrine it is simply a deepening of understanding, nothing is changed rather than deepened and further understood. (thus you have papal infallibility stemming from the infallibility of the Church and Gods promise to preserve the Church against doctrinal error)
I've interpreted "The gates of Hell will not prevail against it" as that the "Church" (Christianity) will not be destroyed, not that it will always be 100% doctrinally accurate.
That said, even Catholics disagree on some things. For instance, you admitted yourself that some Catholics believe in Evolution while others believe in seven-day Creation. So, obviously one group must be wrong right? Yet, you don't have the Church to tell you who is wrong, so you have only personal opinions. Is there inherently anything wrong with this?
I would interpret this a little bit more broadly to say that some important, but not critical, issues in the Bible are not made clear, so while obviously someone has to be right and other people must be wrong, God left gaps to allow us to think freely and decide for ourselves what we wish to believe based on study of the Bible.
On the contrary I am not trying to "proove' protestantism wrong because it is wrong, there is no prooving to be done, and I am just answering your questions anyway. Of course if you see the truth right in front of you that is an added bonus
I know you aren't, but I'm not trying to prove Catholicism wrong either. I'm arguing against some of its tenants to see how they are defended. Ultimately, while I'm not agreeing with you (So far

) I can say that these answers have given me some insight into why Catholics believe what they believe. On some issues, I can say that the Catholic defense is fairly weak, so I still am not convinced of them, but I certainly thank you for taking the time to answer them anyhow.
I actually said "refuting Catholic doctrine". An Evangelical Protestant and a Roman Catholic trying to prove each other wrong would be at it until the cows come home.
Maybe, but I think we'll exhaust ourselves eventually
or until the evangelical (well baptist) protestant in this case converted.
Actually, I prefer Evangelical. While I attend a Baptist Church, I don't really think that makes me a Baptist, especially since there are several baptist doctrines I disagree with, especially in my baptist Church.
I have another question though: Let's assume, for a moment, I bought all your arguments and joined the Catholic Church (You haven't convinced me yet

This is merely a hypothetical.)
Now, in my particular situation, I am a 16 year old teen who lives with two quite anti-Catholic parents (Probably more so than me, they won't call Catholicism a Christian denomination, I will.)
Now, for me, it would not be as simple as me being able to go to a priest to confess my sins and attend a Catholic Church to take sacraments. Even if I wished to do this, I would not be able to.
Assuming I just converted to Catholicism, what could I do to ensure (As much as possible) my eternal salvation?