When discussing this, it's important to remember that Christianity appears to be a monolithic religion, but it's not. The bible appears to be a monolithic text, but it's not. It's 16-80 different religions with similar characters masquerading as one religion by independently selecting lists of bible books to establish as "apocrypha".
https://en.wikipedia.org/wiki/Biblical_canonhttps://en.wikipedia.org/wiki/Apocryphahttps://en.wikipedia.org/wiki/Biblical_apocryphahttps://en.wikipedia.org/wiki/Nag_Hammadi_libraryThis creates some differences, for example some people get that Judas betrayed Jesus to Romans, some get that Judas betrayed Jesus's teachings on the cross by lying to save his life, some get that Judas was Jesus's most loyal follower and the only one to understand him. The book Gospel of Judas for example.
https://en.wikipedia.org/wiki/Gospel_of_JudasThe earliest written evidence of the bible appears 270 years after Jesus died. Human lifespan is barely 100. It is like saying people today personally knew George Washington and lived to now to write about it.
Furthermore we've got the meeting minutes when they made up stuff like the holy trinity and easter, which religions and people they borrowed those from, and why they did it to stabilize the roman state.
https://en.wikipedia.org/wiki/First_Council_of_NicaeaWe also have long records of who screwed with biblical canon or excluded books to make it more believable. You know, guys starting new churches to divorce their wives, high priests getting rid of stuff that isn't believable.