Historical texts affirm the leadership role of the Pope of Rome

Historical texts from various Ecumenical Councils and writings of saints such as St. Maximus the Confessor and St. Theodore the Stud affirm the belief that our Lord appointed St. Peter as the head of the church at Philippi, making the Popes of Rome the leaders of the church until the end of time. This belief is reiterated in the writings of Saint Maximus the Confessor, who also seems to support the infallibility of the apostolic sea of Rome. Additionally, St. Theodore the Stud in his letter to Pope Pascal the first, expresses unwavering faith in the Pope of Rome remaining free from heresy until the end of time. This affirmation is further supported by Pope Hadrian's letter at the Seventh Ecumenical Council, which proclaims strong claims regarding the position of the Pope of Rome within the church hierarchy.