I recommend all these great article finds filled with quotes from the Church Fathers and true contemporary wisdom.
The Whole, True and Perfect Security of the Christian Religion
Did the first millennium Church have a higher view of papal authority and infallibility than we do today?
Did Saint Catherine of Siena and Saint Paul disobey the Pope?
As if to the Lord Jesus Christ Himself
The Medieval Church’s view of the Pope
Rome: 2000 years of unblemished orthodoxy
Jesus said: “You will know them by their fruit.” Matthew 7:16
1st millennium opposition to the Pope
Ante-Nicene Papal Authority