Textual critics are fairly confident that a fair amount of the texts of the New Testament were reliably copied until we get to the first extant manuscripts, and for the stuff that is very obviously messed up, they have a decent set of analytical tools that help them retroject the likeliest original wording. Not perfect, but decent.
Things were written mostly by eyewitness or those who interviewed eye witnesses.
The scholarly consensus is that this is not the case. The earliest written Gospel (Mark) couldn’t have been written any earlier than the occupation of the Temple during the First Jewish Revolt in 66-67, and all indications are that he was writing down traditions that came from his community and others, with no immediate connection to any “eyewitnesses.”
(Source: I have a PhD in this stuff.)
Here are my personal favorites:
AI War / AI War 2 - Pablo Vega
Dragon Quest series - Koichi Sugiyama
Final Fantasy VII - Nobuo Uematsu
Final Fantasy XI - Nobuo Uematsu and others
The Last of Us - Gustavo Santaolalla
Medal of Honor - Michael Giacchino
Offworld Trading Company - Christopher Tin
Stellaris - Andreas Waldetoft (I didn’t notice that this game was just an idle clicker for a long time because the music was so damn good)
Tidalis - Pablo Vega (especially the piano versions)
A Valley Without Wind - Pablo Vega
Fun story! They came to that conclusion because they discovered a text which had what they believed was another very similar word (“epiousi”) that, in context, meant “necessary” or “enough for now.” That text was a shopping list.
Then the text got lost for a long time, and when they found it again, new eyes on it realized that they’d misread the word, so it was back to square one.