The Quran. Not one word should be altered and even the oldest known copy of the Quran is still the same as the present one  I dont think you are lying, but you are wrong.  Textual variants must be a new term for you.  'The Quran' has more inconsistencies and insertions than you are alleging (0???); try over 4000. Christians have never made the claim that the bible has never been altered. Christians see the holy text as the word of God - inspired through man (Disciples and Apostles). The bible is not infallible; only God our Father is.