Argument from inconsistent revelations
The Argument From Inconsistent Revelations is based upon the many number of interpretations of Holy Texts and Scripture. If Scripture was revealed to man by God, and God is infallible, then all revelations would be the same, inerrent text.
So, therefore, God cannot exist in the capacity that Christians say he is, because his own writings betray his capacity for error, or betray his non-existence. Either God is fallible, or humans wrote the Bible and God was not involved. Needless to say, Christians don't like to agree with the former.