The following is from *Losing Faith In Faith*, by Dan Barker:
Jesus supposedly lived sometime between 4 BC and 30 AD, but there is not a single contemporary historical mention of Jesus, not by Romans or by Jews, not by believers or by unbelievers, not during his entire lifetime. This does not disprove his existence, but it certainly casts great doubt on the historicity of a man who was supposedly widely known to have made a great impact on the world. Someone should have noticed.
One of the writers who was alive during the time of Jesus was Philo-Judaeus. John E. Remsburg, in The Christ, writes:
"Philo was born before the beginning of the Christian era, and lived until long after the reputed death of Christ [ca. 15 BC-50 AD, kwh]. He wrote an account of the Jews covering the entire time that Christ is said to have existed on earth. He was living in or near Jerusalem when Christ's miraculous birth and the Herodian massacre occurred. He was there when Christ made his triumphal entry into Jerusalem. He was there when the crucifixion with its attendant earthquake, supernatural darkness, and resurrection of the dead took place—when Christ himself rose from the dead, and in the presence of many witnesses ascended into heaven. These marvelous events which must have filled the world with amazement, had they really occurred, were unknown to him. It was Philo who developed the doctrine of the Logos, or Word, and although this Word incarnate dwelt in that very land and in the presence of multitudes revealed himself and demonstrated his divine powers, Philo saw it not."
There was a historian named Justus of Tiberius who was a native of Galilee, the homeland of Jesus. He wrote a history covering the time when Christ supposedly lived. This history is now lost, but a ninth-century Christian scholar named Photius had read it and wrote: "He [Justus] makes not the least mention of the appearance of Christ, of what things happened to him, or of the wonderful works that he did." (Photius' Bibliotheca, code 33)