Well believing in God and Jesus is faith and not fact based. Although as time goes on it seems more and more archaeologic finds do support some passages in the Bible.
As to books of the Bible there are many that were left out by the Church because they presented things that the Church did not want presented.
There is the Apocrypha in the Catholic Bible that includes books not in the in the Christian Bible. Then there are many books and manuscripts that were deemed to secular for the masses.
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