“You must all follow the bishop as Jesus Christ follows the Father, and the presbytery as you would the apostles. Reverence the deacons as you would the command of God. Let no one do anything of concern to the Church without the bishop. Let that be considered a valid Eucharist which is celebrated by the bishop, or by one whom he appoints. Wherever the bishop appears, let the people be there; just as wherever Jesus Christ is, there is the Catholic Church. Nor is it permitted without the bishop either to baptize or to celebrate the agape; but whatever he approve, this too is pleasing to God, so that whatever is done will be secure and valid.” (St. Ignatius of Antioch, Bishop and Martyr; Letter to the Smyrneans § 8)
October 17 is the Memorial of St. Ignatius, Bishop and Martyr ( – 107).