>>108167369What part are you saying is false? It's true, for example, that some Christian sects use Aramaic, Syriac, Ge'ez, or Coptic as liturgical languages and thus wouldn't use 'Allah' in religious rites, they commonly do so in their vernacular language.
In any case, every religion goes through multiple iterations through its history, so there are certainly multiple dates you might reasonably consider the 'beginning' of Christianity, I'm struggling to figure just what dates you are using. Care to enlighten us?