The Bible is probably the most studied it book in history. Linguist, Christian and non-Christian, stake their reputations on the accuracy of the text that they use. The New Testament texts that we have are written within 100 Years of the original, therefore they are the most accurate documents that we can have and use
The errors and forgeries concept, that you mention, comes when people think that one translation is made from another translation that is made from another translation, that would in fact create errors. Those that advance that theory either don’t know how translation is done, or they are evil in their intent (or both)
