There was widespread corruption, immorality, and cruelty throughout the history of the papacy. Many popes engaged in murder, nepotism, selling positions in the church, and other sins. They persecuted those deemed heretics, resulting in the torture and deaths of thousands over 600 years. However, the doctrine of papal infallibility was introduced, despite clear contradictions between popes on important doctrines and practices. The Bible does not support the claim that popes or any leaders are infallible or should be revered as "Holy Father".