“Don’t be surprised that the anti-Christ sends so called “ Teachers “ out into the world as well taught teachers of all things in the bible who have “ Authority “
And they were all wrong for the first 1,500 years after Christ died. It took some heretic German monk to really figure out the way to salvation; one that even had the audacity to try and change the Word of God so the Bible would say what he wanted it to say, not the inspired Word of God, canonized for over a thousand years before the heretic Luther was born.
Regarding changing the Bible...one can make the case that the RCC has been the one to change the Bible by including the Apocrypha as official scripture.
The Jews didn't recognize it...Christ didn't recognize it, Jerome didn't think it was "official" as didn't a number of the ECFs.