Which part, and why? Please, break it down for me. I'm more than happy to give evidence in support of this view I once thought preposterous. I grew up Protestant Christian. I was a fundamentalist evangelical for most of my adult life, 2 decades. I've been studying history for many years since I entered college 32 years ago. So, I have much to learn and have learned much that I once thought was way overstated or lied about. The reasons for my statements are not to sound arrogant, as you put it, but to show that many people don't know nearly as much as they claim. I used to defend the Catholic beliefs after sitting through bible classes believing all Catholics are going to hell as part of my then Protestant believe stated. In fact, we never claimed to be Protestant, still don't. Then I typed in "ancient christian documents" and there began the unlearning of old anti-Catholic sentiments I held most of my life.
My statements are based on fact, not personal beliefs... when I say fact, I mean historical teachings and how those teachings are classified, not personal feelings. I hated what I was learning and ended up converting to Catholicism kicking and screaming. The overwhelming majority of Catholics don't even know the teachings of their own faith - around 80% at least from what I've read and been told by teachers. And most Protestants and other non-Catholics base their beliefs on what most of those ignorant Catholics tells other people. No wonder so many people hate us. It's hard to blame them. I surely don't. I also don't believe Protestants are doomed to the eternal fires. Who is saved is up to God. I won't say. However, I'm like most of you and seriously doubt, reject, any type of teaching that voodooians are saved. I have my doubts about Islam and frankly it doesn't stop there. Even people that claim to be Christian, often have mixed up beliefs and don't stand on solid ground, even after studying history staring them in the face. However, I won't go as far as to blame them. Only God knows a man's heart.
The arrogance you detect is my confidence in my belief. I'm far more disappointed with my Catholic brethren than I am Protestants. I feel betrayed most of the time. In fact, one of the interesting things I've uncovered is just how close many Protestants are to Catholicism. If you don't believe me, then go do the reading. Don't be afraid. These writings are from Polycarp, Ignatius of Antioch, Clement of Rome, Justin Martyr, etc. These are men that sat at the footsteps of the Apostles and their disciples. But even after you've studies them I don't expect that you'll act upon them without questioning them. It's taken me many decades to get where I am today. And I'm nowhere close to being where I wish I were.
I told my son today driving home that when we [mature adults] compare ourselves to them [teens], it sounds enormously different. However, when we compare ourselves to God [assuming one could] the difference wouldn't even be noticeable from where God is sitting. No offense intended. But I will say what is on my mind. I won't condemn others, especially knowing from where I came.