I think the fact that there are so many different versions with different books added to and taken from, proves such.
These people actually sat down and decided what they wanted to leave in and take out. Who gave them that authority? The King? Emperor?
Just a rudimentary knowledge of the Hebrew text and you can see the difference in meanings of the text. Certain things are purposely mistranslated to deceive people.
For instance all throughout the Bible, the word virgin is used. Well in the Hebrew text, "Bethulah" corresponds with that word. However, in some cases "Almah" was used. This word does not mean virgin, it means young woman. The Greeks with their limited language simply put a word there "parthenos" that means virgin, but the hebrew text just denotes her as a young woman. This gave credence to the virgin birth nonsense that is still believed today.
Some fools will argue the correctness of the Greek Septugaint and don't even know the Hebrew origin to make comparison. This is silly.
Semitic Languages are vastly different in expression than English or Greek. You can use the same word in a different arrangement and change the whole complexity and meaning of the word. Take the Arabic word Rabb, which has a common etymological origin with the Hebrew word Rabbee. In some instances it means Lord, In some instances it may Sustainer, Nourisher, Cherisher and even Master. Depending upon how you use it in the sentence and with what combination of words. English is not like that.
If you really believe in the Bible, any serious student would make every effort to study the Original tongue out of which it was translated, and no Biblical Hebrew is not significant different than what is spoken today. Don't fall for that one. Reggie White undertook a serious study of Hebrew and he admitted that he had been teaching things that were not true and that he was in some instances lied to intentionally by people who knew the truth. He exposed some of them and was made persona non grata in many church circles because he would not lie to the people.
There is more, but will save for later.