I recently heard someone say the Bible can't be trusted because there are missing verses in some versions and it has been added to. Mark 16:9-20 was the particular culprit in that conversation. The claim is that it was not part of the original text written by Mark. Therefore it was added later and should not be part of the Bible. It is a well known and often quoted section. If it is not original, then Christians around the world have been deceived.