23 So also the patriarchs and prophets whom you cry out against are not the men whom we honor, but men whose characters are drawn from your fancy, prompted by ill-will. And yet even thus as you paint them, I will not be content with showing them to be superior to your elect, who keep all the precepts of Manichæus, but will prove their superiority to your god himself. Before proving this, however, I must, with the help of God, defend our holy fathers the patriarchs and prophets against your accusations, by a clear exposition of the truth as opposed to the carnality of your hearts.
As for you Manichæans, it would be enough to say that the faults you impute to our fathers are preferable to what you praise in your own, and to complete your shame by adding that your god can be proved far inferior to our fathers as you describe them. This would be a sufficient reply for you. But as, even apart from your perversities, some minds are of themselves disturbed when comparing the life of the prophets in the Old Testament with that of the apostles in the New—not discerning between the manner of the time when the promise was under a veil, and that of the time when the promise is revealed,— I must first of all reply to those who either have the boldness to pride themselves as superior in temperance to the prophets, or quote the prophets in defence of their own bad conduct.
Source: Reply to Faustus the Manichaean (New Advent)