Jesus is the main writer. His diciples rewriter: John; Luca; Matheu, and Marco
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The author of the bible the the True God, the Father, while the writers were composed of 40 different men who lived at different time. 1513 bce when the bible was started to be written and completed 96CE. the writers are moise, joshua, samuel, gad, nathan, jeremiah, ezra, nehemiah, mordecai, david, solomon, agur, isiah, ezekiel, daniel josea, joel, amos, obadiah, jonah, micah, nahum, habakuk, zephaniah, haggai, zechariah, malachi, mathew, mark, luke, john, paul, james, peter, and jude...... paul wrote much more compare to other.... while john the last writer, who completed the bible.... who wrote the book of revelation.
sori if i miss some words, letters or even the names.... but pretty much sure, 40 different men who wrote the bible.... note: author and writer are very different..... the author is God while writers are men