It is only a certain collection of Christians (the Fundamentalists) who maintain that ALL of the Bible originated with God. Adherence to this belief is unwarranted for at least four reasons;
(1) It is not claimed within the Bible itself;
(2) It is an unworthy attitude;
(3) It is not self-consistent;
(4) It is logically impossible.
(1) … The Bible nowhere names itself. The word “Bible” is not in the Bible. Sixty-six books have been bound as one without any divine command to do so. Compare, for example, the opening of the book of Jonah: “The word of the LORD came to Jonah the son of Amittai saying …” and the opening remarks of the writer of the third gospel account: “… it seemed fitting for me … to write it out… ,” (NEW AMERICAN BIBLE). The first book claims divine inspiration, while the second author makes no such claim.
By trading on the vagueness of the words “scripture” and “book” the Fundamentalists try to make a case for the Bible’s total inspiration. For example, they quote 2 Timothy 3:16 where Paul wrote to Timothy, “… all scripture is inspired of God …” In the first place, it still remains to establish the authority of Paul … did he speak for God here? But the real trickery is in the isolation of this verse. In the sentence before this Paul indicated what he considered as scripture, namely, that which Timothy studied as a child. When Timothy was a child the last twenty seven books of the Bible had not been written.
The antepenultimate verse of today’s Bible seems to conclude the whole of the Bible, as it warns against adding or subtracting contents in “this book”. However. “this book” can only refer to this last book of the Bible and not to the Bible itself. The reason is clear: Any Christian reference will acknowledge that other books of the Bible were written after this one, that is, the last book in today’s Bible was not the last one written. In fact, exactly which books should form the contents of the Bible was still being debated three hundred years after Jesus.
(2) … The official position of Fundamentalist churches is really a modification of the blunt statement: “The Bible is the perfect word of God.” While they consider the modification only slight, it is actually ruinous. They say that the Bible is “inerrant in the original manuscripts”. If all contradictions in the Bible could be explained away as misunderstandings, why would they rely on this excuse? By taking this position they admit to errors in the Bible. These are said to be only small copying errors made over the centuries as the scriptures were recopied. They have disregarded the advice of Jesus who said that carelessness in the little things means carelessness in large matters (Luke 16:10). Yet the unworthy statement about today’s Bible is really: “The Bible contains small mistakes but no big ones.”
(3) … There are abundant copying errors in the Bible, the conflicting statistics of Ezra 2:5 and Nehemiah 7:10, for example. On the one hand the Fundamentalist admits this to be the case and excuses it as a minor copying error. On the other hand, he puts his trust in the statement of Isaiah 40:8 which says, “The word of our God stands forever.” This verse does not go on to accept minor details due to flaws in the transcription of His word. According to this verse, if God says it, it does not get lost. But mistakes of transcription means something of the original has been lost. It is inconsistent to excuse error and simultaneously disallow error. The only solution is to drop the notion of total divine inspiration of the Bible.
(4) … Total inspiration is illogical because it is both disavowed and disproved within the Bible. At 1 Corinthians 7:25 the Bible writer specifically says that he is about to make a statement which did not originate with God … inspiration is disavowed. In the first chapter of Titus we have a counter example which disproves total divine inspiration. Paul quoted the famous Epimenides paradox, specifying that the speaker himself was a Cretan: “Cretans are always liars …”. He then says that the man spoke the truth. But when the statement is spoken by a Cretan it is definitely not true. If it was true then at least once, a Cretan was not a liar, in which case the statement is false. The conclusion is the denial of the assumption, so the statement is not true. The writer Paul at least on this occasion, was without divine guidance for he did not discern this subtlety.
Dr. Gary Miller “A concise reply to Christianity – a Muslim view”