Case of Antipope Ursicinus and his deposition from his Throne in Rome Before Great Western Schism = Heretic Cannot Be a Pope
Pope St. Damasus I (305-384) The Defender of Catholic Church who struggled against Arianism and Macedonianism Before go to the case of Antipope Ursicinus, Let's we give attention to what Our Lord, Jesus Christ spoke about The Papacy that Pope has Infallibility for His Teachings and so his Teachings on Magisterium cannot be erred : " And I say to thee: That thou art Peter; and upon this rock I will build my church, and the gates of hell shall not prevail against it. And I will give to thee the keys of the kingdom of heaven . And whatsoever thou shalt bind upon earth, it shall be bound also in heaven: and whatsoever thou shalt loose upon earth, it shall be loosed also in heaven. " (Matthew 16:18-19) About The Gates of Hell which underlined has many means, its including disaster, heresy, apostasy, and other misleadings which are Abyss of Hell. (As from what Douay Rheims interpreted that " "The gates of hell" : That is, the powers of darkness, and whate...