Roman soldiers had no affection for the Jewish people, so being given permission to mock and crucify a Jewish man was an opportunity they relished and took a sick pleasure in executing. As such, they intended to fully humiliate Jesus before nailing Him to the cross. Part of the humiliation involved mocking Jesus as a king. This is why they clothed Him in a purple robe or cloth, which was the color of royalty, and made a crown of twisted thorns, which was intended as a mock crown but also to inflect pain when they pressed it down upon His head.