I'm asking because alot of the atheists or just people who have no interest, dont believe or think he even existed to begin with. And on the other hand, people believe it all to be true from what's in the bible. My question is from an objective historians point of view, how much,if it all is fact or fiction?
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Big question! And depending upon whom you ask, you are likely to get a wide range of answers. As you indicated, that can be based upon the theological lens of the person answering.
Miracles, because they are defined as "an effect or extraordinary event in the physical world that surpasses all known human or natural powers and is ascribed to a supernatural cause," simply cannot be either definitively attested to or denied on historical grounds.
Determining whether the man, Jesus of Nazarath, existed is a matter that historians can seek to address. Determining if he walked on water is simply outside the realm of the nature of a historian's work.
I recommend Dr. Bart Ehrman's books if you are interested in exploring this question more. He is an early Christian era scholar who publishes at all levels, textbook as well as trade for mass audience. He does an excellent job of explaining why some questions are just not able to be answered by historians and must remain in the domain of theology.
You might get something out of this specific lecture, part of the Open Yale course on the History of the New Testament by Dale Martin.
He answers all of your questions, more or less. His personal (though very well-informed) belief is that there was a historical person named Jesus who lived and taught in Judea and who inspired followers (who had different ideas about what his ministry meant and how they should carry his teachings into the future).
Small thing- The Bible is a historical document. It has to be read very carefully from a historical perspective, but the various books are indeed ancient and provide insights into the times in which they were written (as welll as later times via how they were read and interpreted). Thr search for the "historical Jesus" must take the Bible into account, as well as other sources such as the gnostic texts, Josephus, Roman sources, etc. Where it gets really hairy is figuring out what is true, what actually refers to Jesus and not someone else, etc.