Thank you for so many comments. I will have to check thoroughly.
My comment refers to the New Testament, the christian scriptures,
The orginal writings are not conserved because they were written on papyri and parchment.
The text is not errorless but anyhow the church treated the gospels and letters as holy.
The scriptures played always an important role in the church and were translate into many languages already early.
The gospel writers were very creative writers to convince some jews to become christians, so they changed the meaning of words that were used in Hebrew bible and gave them a new meaning in the christian context.
E.g. the man of sorrows in Jesaja 53 an hundreds of other examples.
The NT is thus a document of the church's faith. But not everything that is important for the faith is written down in the bible.
The bible canon was not a rewriting of older manuscripts at the church council,
http://www.consider.org/library/text.htm
Permanet problems that bible translators have to face:
http://biblicalstudies.org.uk/article_trans_metzger3.html