I'll take their decision under advisement, but at one point they declared the earth to be one massive church and reacted very negatively to people who observed curvature and concluded it was round like a ball. Claiming that the bible is a 100% factual cronicle of events that must be taken literally ignores that it has been heavily edited over the years, with an entire author's work removed from the compilation.
There are a number of books that were removed from the Bible. These books are referred to as the Apocrypha, which means “those that are hidden” in Greek and
www.meredithgould.com
You really should carefully consider Church teaching. When did the Church teach a flat earth? remember the New Testament texts were written in Greek, the Greek speaking world was aware the earth wasn't flat, they even had
a good approximation for the diameter of the Earth for centuries by the time the Church was founded.
I don't doubt there were some flawed characters in the Church who taught error as fact in a personal capacity, including Clerics and laymen like Galileo (turns out Keppler, a Protestant, was much
much better with his eliptical orbits model). Naturally there are also textual variations, but they do not change anything meaningful, most genuine arguments and controversies come from translating between languages.
As I understand it there have always been exactly 73 books in the biblical canon, once the last text of the new testament was written. The Church just recognized them. The 66 book version is a bizarre innovation from the late middle ages to throw out the Deuterocanonical books, to simplify false teachings presumably.
Honestly, with Jesus are only two things important.
The first thing is whether he was fathered by a man, e.g. Mr. Panther. If someone thinks so, then at best he can look for faith in Judaism.
The second is whether he was resurrected. It is more difficult here, if someone thought that he was simply killed on Golgotha, then as above, let him talk to a rabbi if he really wants to believe in god. Both Islam and Christianity require faith in miracles, i.e. the action of intangible force contrary to the laws of physics, nature and the fucking civil code.
All other things - sacrifice and taking sins from humans - have just a minor importance compared to this two.
Remember the Apostles and early followers of our Lord had a habit of dying rather than denying his Godhood. This reflection of God's love, to lay down your life for your friends is not of "minor importance".
Comparing Christianity to Islam, and by necessity the Jesus of the Scriptures vs. the Jesus character presented in the Koran, written centuries later and denying his death on the Cross, you must not only believe in miracles in both cases. You must believe in totally different histories.
You must in Christianity believe God loved the world enough to send his only begotten son to die for it's redemption, while in Islam a Jesus character seemingly identical in key ways to certain heretical "gospel" texts (that happen to predate the Koran by centuries) is part of a grand bait and switch, where it's a deception, that Jesus didn't die on the Cross.
The miracle for Christians is that Jesus willingly chose death to free us forever, in Islam it's a mere illusion, Jesus isn't the Divine Son, the miracle seems to be how his teachings which were supposedly Islamic disappeared without a trace seemingly immediately.