Each generation preserved the previous generations works and quoted them in their works which were often in opposition to each other.
Was there majority consensus?
which I think is unreasonable
Why? From my point of view anyone who has accepted Jesus, a human being, as God is not being critical enough of their scripture, which doesn't enforce that idea from Jesus' preaching or action.
or accept that they accepted the other persons quotations because they had no reason to think the other person was quoting falsified works.
That is not sufficient evidence, unless you can tell me who these people quoting previous scholars are and why they are of good enough character to be trusted.
For the fourth time, please provide me a source that shows any form of authenticity to the documents you are asserting prove your original point. This is not at all a difficult question.
There are Christian traditions that have changed, I would say all but Orthodoxy
The Abyssinian King in the 7th century was not a believer in the Trinity. Wouldn't you say that this is evidence of an original Christianity which we Muslims believe was wiped out by Constantine?
and there are Islamic traditions that have changed, all but one, and I am not informed enough to have a strong opinion on which
The one that hasn't changed is the one that follows only the Qur'an and the sunnah (Prophet's teachings), which is equivalent I guess to Orthodox Christianity. That has always been the vast majority sect, 80-90% of Muslims today are what is known as "Sunni Muslims."
was this person influenced by a good spiritual power or a bad one
Easiest way is to study their life, their teachings and their book, correct? Have you done so?
Lets look at what you said right before this "a religion that ruled the world for centuries after him" and ask, when did this trend start? Am I wrong in saying this trend started before he died? Obviously he didn't rule the world, but he had a staidly growth of his dominion throughout his life. As to how he would be able to do what he did in his book I already alluded to how that could have been done
So you're saying he wanted power? Money? Women? He was offered all of that if he would only stop preaching his religion, and he denied it, and hew as tortured and boycotted, as were his followers. His life was not easy. When he eventually ruled Arabia, he maintained a simple life. So your point doesn't collude with the reality. Plus, all he ever did was preach peace between people, and monotheistic worship. Any other reasons you think he may've made Islam up?
treating me so terribly
I sincerely apologize if I insulted you or was harsh in the way I spoke, I only ever meant to assert my view but I highly respect all Christians and people who believe in the same God as myself.
What false thing have I said so far about Islam?
I never said this. What I said was that you are positing ideas that are not found within the Islamic doctrine, like why Muhammad would invent this religion.
"But that means you can accept everything and anything without any consideration for the logic."
Not at all the same. Islam employs logic on every level. When it comes to understanding God's full power (like free will and God's will simultaneously existing) then faith may be required, but there is always an answer or an attempt at one. I believe you're about to give me such an example.
The Son is begotten of the Father and as such is of the same essence of the Father and thus cannot be a created being with an origin, rather as He reveals to us in the Scriptures He is one with the Father, but not confused with the Father.
It's obvious that I need to read up on this more because this explanation raises so many questions for me. Why does an Almighty God every have to "beget" and not just create? Why do you assume "one with the Father" means literally and not in mission? Why did Jesus grow in the womb and not just descend to Earth? Why was He not clear, directly asking to be worshiped and stating that he is God? Did the Apostles worship him? To whom did Jesus pray when he threw his face to the ground? Himself? God prays to himself?
All of these questions you can dismiss by saying they are mysteries of God (although I'm sure they have answers) but in Islam that wouldn't happen, everything would be explained because it isn't this convoluted. Anyway, I most definitely will be reading more about Christianity so in the future I can be better prepared for such arguments.
Deedat seems to think Trinitarians think God came down and only existed in the Virgin Mary's womb, which no one suggests.
He's a former Christian. If you care to hear counter-Christian arguments, if only to strengthen your own belief, he has many videos on YouTube discussing different contradictions in the Bible and the modern day errors of Christian pedagogues.