Muhammad was taught by waraqa bin naufal aka Bahira aka a catholic monk thats what inspired him to dictate the writing of the quran
before Muhammad the sons of Ishmael were pagans. There were also christian Arabs and Jews before the invention of the quran
everyone knows that there were christian and jew and pagan arabs before islam.
and not that I'm agreeing or disagreeing with your post but Blackking on sohh years ago explained:
that nikka Bahira was a Christian priest. Not the type of Christian that we have today... - so he was considered an enemy to most Christians. But Islam wasn't created to go against Christianity....... As Christianity had many view and types and many thoughts.
Who is to say whats right or wrong????? when .... Bahira practiced like most Christians who KNEW jesus practiced and the majority of Christian have zero clue.
Anyway he was Muhammads 3rd cousin.... and related to Muhammads 1st wife.
He remained a Christian after the revelation of the Quran because he didn't need to change. The Quran was for the polytheist and pagans. It was for the Jews and Christans who weren't doing shyt right. It was for the people who put Money before faith and for the people who wanted to Kill Jesus when Jesus ( not his real name of course ) was alive............... So Bahira was never At odds with Islam. And he was the first monot who believed in the prophet.
Plus Bahira called God Allah, ate like jews and Muslims and culturally was already were Muslims were supposed to be at after conversion.
Muhammad wasn't taught by Bahira -- First off........... lol, Bahira didn't have knowledge that wasn't already available for all monotheist at the time. He didn't have any special revelation. But he didn't give Muhammad more confidence because as Quranic (and Non-Quranic ) sources state ------ Kadijah brought Muhammad to the guy and the guy was surprised at what he knew and became a supporter. Maybe he did drop some knowledge about the scriptures and about jewish teachings, etc............ That's a good thing because Islam is supportive of all of those words and it's best for a Muslim to be very knowledgeable on those subjects .............
btw- i not saying Nestorianism is correct.....