Here is an excellent video showing evidences that the corrupt Bible manuscript called Codex Sinaiticus is a modern forgery:

https://www.youtube.com/watch?v=YRPesjcL20c

Somehow on the same line is this documentary:

https://www.youtube.com/watch?v=-aiHcghIdjM

For those who don't know, the so-called discovery of Codex Sinaiticus is used by the textual critics as pretext to question and change an important number of the words of the Bible.