History is often based upon fragments, voices that are transmitted through the passage of time, and the painstaking efforts of historians who juxtapose their records, cultures, and situations to figure out what actually occurred. In the case of Jesus, historians are not dependent on belief but investigating independent sources, societal influence, and regular references which all lead to a strong argument in favor of the existence of Jesus.
Multiple Sources

The fact that there are several independent writings which refer to Jesus has been highlighted by historians that further substantiates the argument that Jesus was real and not a legend. These are written in various places and at various times, and are consistent in describing a teacher who lived in first-century Judea.
Roman Records

Non-Christian evidence of the existence of Jesus is given by Roman historians like Tacitus who mentioned Jesus and his crucifixion under Pontius Pilate. It is particularly relevant that these documents are provided by authors who had no incentive of backing up Christian interests.
Jewish Accounts

An external source that fits other descriptions of Jesus is a mention by Jewish historian Josephus. Although there are some passages that scholars disagree about, most of them concur that at least part of his work proves that Jesus was a real person.
Early Writings

The documents of the New Testament were composed comparatively soon after the life of Jesus, which is not typical of ancient history. This closeness minimizes the possibility of myth substituting memory and indicates that the narratives were founded on actual occurrences.
Consistent Narrative

In the various texts, the main account of Jesus is very similar, not only in terms of his being a teacher but also in his death. This consistency lends credence to the notion that these accounts give a common historical reality as opposed to fancied stories.
Named Figures

The documents of Jesus contain records of actual historical events such as Pontius Pilate and Herod who are verified by other manuscripts. This is based on a familiar history which lends credibility to the narratives where Jesus is featured.
Geographic Accuracy

The accounts of the places, towns, and cultural practices are descriptions that are consistent with what historians know about first-century Judea. Accurate information concerning geography indicates that the authors were conversant with the location and probably relating actual events.
Cultural Context

The teachings and actions of Jesus were very appropriate in the Jewish culture and religious controversies that existed during his era. Historians observe that his message captures the issues and words of that time which further embeds him in history.
Execution Record

This testimony of sources that Jesus was crucified is a powerful historical landmark. Crucifixion was not an unfamiliar form of punishment in the Roman world, and the information can hardly be fabricated because it is a humiliating and cruel procedure.
Rapid Movement

The early spread of Christianity was rapid and it was soon after the life of Jesus that it may well be presumed that people were acting on a response to an actual person. The kind of movements to that scale are often the result of the authority of a real individual and not a mere figment of imagination.
Eyewitness Claims

There are some early documents which purport to have been founded on eyewitness testimony or intimate relationships with individuals who knew Jesus. Although historians consider such assertions with critical attention, they contribute to the discourse of history.
Scholarly Consensus

Modern historians of every stripe, whether or not they believe it to be true, concur that Jesus as a historical figure existed. This is an agreed-upon fact and not one of faith, with evidence backing it over the academic disciplines.
Lack of Denial

Funny enough, early opponents of Christianity did not claim that Jesus was nonexistent but, instead, opposed his teachings or person. The fact that opponents did not deny the existence of this person adds credence to the argument that his existence was universally accepted.