change facts.
Evidence of first hand witnesses who claim to have spent years with a person is routinely accepted as reliable and conclusive proof of the existence and actions of a person in courts of law everywhere.
Eye witness accounts of Jesus' existence as recorded by the Apostle John.
Prove John's accounts are false.
Paul's account of meeting Jesus.
The first-century Roman Tacitus, who is considered one of the more accurate historians of the ancient world, mentioned superstitious “Christians” (from Christus, which is Latin for Christ), who suffered under Pontius Pilate during the reign of Tiberius. Suetonius, chief secretary to Emperor Hadrian, wrote that there was a man named Chrestus (or Christ) who lived during the first century (Annals 15.44).
Flavius Josephus is the most famous Jewish historian. In his Antiquities he refers to James, “the brother of Jesus, who was called Christ.”
https://www.gotquestions.org/did-Jesus-exist.html
From Tacitus we learn that Jesus was executed while Pontius Pilate was the Roman prefect in charge of Judaea (AD26-36) and Tiberius was emperor (AD14-37) – reports that fit with the timeframe of the gospels. Pliny contributes the information that, where he was governor in northern Turkey, Christians worshipped Christ as a god. Neither of them liked Christians – Pliny writes of their “pig-headed obstinacy” and Tacitus calls their religion a destructive superstition.
https://www.theguardian.com/world/2017/apr/14/what-is-the-historical-evidence-that-jesus-christ-lived-and-died