8 In which place, dearest brother, we must consider, for the sake of the faith and the religion of the sacerdotal office which we discharge, whether the account can be satisfactory in the day of judgment for a priest of God, who maintains, and approves, and acquiesces in the baptism of blasphemers, when the Lord threatens, and says, “And now, O you priests, this commandment is for you: if you will not hear, and if you will not lay it to heart to give glory unto my name, says the Lord Almighty, I will even send a curse upon you, and I will curse your blessings.” Does he give glory to God, who communicates with the baptism of Marcion?
Does he give glory to God, who judges that remission of sins is granted among those who blaspheme against God? Does he give glory to God, who affirms that sons are born to God without, of an adulterer and a harlot? Does he give glory to God, who does not hold the unity and truth that arise from the divine law, but maintains heresies against the Church? Does he give glory to God, who, a friend of heretics and an enemy to Christians, thinks that the priests of God, who support the truth of Christ and the unity of the Church, are to be excommunicated? If glory is thus given to God, if the fear and the discipline of God is thus preserved by His worshippers and His priests, let us cast away our arms; let us give ourselves up to captivity; let us deliver to the devil the ordination of the Gospel, the appointment of Christ, the majesty of God; let the sacraments of the divine warfare be loosed; let the standards of the heavenly camp be betrayed; and let the Church succumb and yield to heretics, light to darkness, faith to perfidy, hope to despair, reason to error, immortality to death, love to hatred, truth to falsehood, Christ to Antichrist! Deservedly thus do heresies and schisms arise day by day, more frequently and more fruitfully grow up, and with serpents' locks shoot forth and cast out against the Church of God with greater force the poison of their venom; while, by the advocacy of some, both authority and support are afforded them; while their baptism is defended, while faith, while truth, is betrayed; while that which is done without against the Church is defended within in the very Church itself.
Source: The Epistles of Cyprian (New Advent)