Just to poke needles at the burning ljim:
The Qur'an came fairly directly. God -> Gabriel -> Mohammad -> people; a little while after the prophet croaked, they wrote it down. A few years later they standardized it into one authoritative copy. The society then (and its remnants now) had a strong oral culture: memorizing stuff thoroughly was commonplace. Is it this more justifiably the 'word of god'?
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