8 Yet although, in these last times, evangelic rigour has not so failed in the Church of God, nor the strength of Christian virtue or faith so languished, that there is not left a portion of the priests which in no respect gives way under these ruins of things and wrecks of faith; but, bold and steadfast, they maintain the honour of the divine majesty and the priestly dignity, with full observance of fear. We remember and keep in view that, although others succumbed and yielded, Mattathias boldly vindicated God's law; that Elias, when the Jews gave way and departed from the divine religion, stood and nobly contended; that Daniel, deterred neither by the loneliness of a foreign country nor by the harassment of continual persecution, frequently and gloriously suffered martyrdoms; also that the three youths, subdued neither by their tender years nor by threats, stood up faithfully against the Babylonian fires, and conquered the victor king even in their very captivity itself.
Let the number either of prevaricators or of traitors see to it, who have now begun to rise in the Church against the Church, and to corrupt as well the faith as the truth. Among very many there still remains a sincere mind and a substantial religion, and a spirit devoted to nothing but the Lord and its God. Nor does the perfidy of others press down the Christian faith into ruin, but rather stimulates and exalts it to glory, according to what the blessed Apostle Paul exhorts, and says: “For what if some of these have fallen from their faith: has their unbelief made the faith of God of none effect?
God forbid. For God is true, but every man a liar.” But if every man is a liar,and God only true, what else ought we, the servants, and especially the priests, of God, to do, than forsake human errors and lies, and continue in the truth of God, keeping the Lord's precepts?
Source: The Epistles of Cyprian (New Advent)