Julius Africanus quotes the historian Thallus in a discussion of the darkness that followed the crucifixion of Christ (Extant Writings, 18).
There is overwhelming evidence for the existence of Jesus Christ, both in secular and biblical history. Perhaps the greatest evidence that Jesus did exist is the fact that literally thousands of Christians in the first century AD, including the twelve apostles, were willing to give their lives as martyrs for Jesus Christ. People will die for what they believe to be true, but no one will die for what they know to be a lie.