Michael

“But unlike the apologists who struggle to make historical sense of Mark’s scenario, we really don’t need to waste much speculation trying to solve these difficulties – since there’s a bigger problem with the entire set-up. Perhaps the single biggest historical difficulty with the customary releasing of a prisoner at Passover (Mark 15:6) … is that we have no corroborating evidence whatsoever that this “custom” ever existed. Neither the Jews, the Romans nor Pilate himself ever had a custom of freeing prisoners on Passover (or any other day), not that an occupational governor would ever have offered to release a convicted murderer and anti-Roman insurrectionist even if that were the case. Christians have spent years scouring Roman and Jewish records in search of supporting evidence to justify the historical veracity of this so-called Privilegium Paschale, to no avail (see Nailed, pp. 97-99).”
― David Fitzgerald, Jesus: Mything in Action, Vol. I