First off Pilate has Jesus flogged. This is thought to be a light punishment and not the dreaded scourging. Putting the Gospel accounts together is seems that Jesus was flogged and taunted and humiliated, but later on, just before being sent to the site of the execution was scourged then. Now comes the crown of thorns and the purple robe. It appears that Pilate his vile treatment of Jesus would be enough to satisfy His enemies, but it is not. After some back and forth, where it is apparent that Pilate finds no reason to execute Jesus, he encounters backlash. Pilate finally gives in and allows Jesus to be crucified.