The Pardoner's Prologue and Tale
Although the Pardoner was a priest he lived a life that was far from the word of Jesus Christ. He often broke many of the seven deadly sins including greed, gluttony, and pride.  He earned a living through preaching and selling fake relics to his supporters.  He lies to people and promises them salvation and prosperity for a price.  He has even taken money from a poor widow with starving children in order buy himself more luxuries.