A Jewish historian
Writing in Rome around AD 93, the Jewish historian Josephus described Jesus as a wise man and a doer of startling deeds, condemned by Pilate. Most scholars hold that the authentic core of this passage remains: the testimony of a non-Christian writer of the first century.
Now there was about this time Jesus, a wise man; if it be lawful to call him a man. For he was a doer of wonderful works; a teacher of such men as receive the truth with pleasure. He drew over to him both many of the Jews, and many of the Gentiles. He was [the] Christ. And when Pilate, at the suggestion of the principal men among us, had condemned him to the cross; those that loved him at the first did not forsake him. For he appeared to them alive again, the third day: as the divine prophets had foretold these and ten thousand other wonderful things concerning him. And the tribe of Christians, so named from him, are not extinct at this day.