6 With good reason, therefore, and very fittingly, in reference to your rash attempt, has that divine elder and preacher of the truth burst forth in verse against you as follows:—
“Marcus, you former of idols, inspector of portents,
Skill'd in consulting the stars, and deep in the black arts of magic,
Ever by tricks such as these confirming the doctrines of error,
Furnishing signs unto those involved by you in deception,
Wonders of power that is utterly severed from God and apostate,
Which Satan, your true father, enables you still to accomplish,
By means of Azazel, that fallen and yet mighty angel—
Thus making you the precursor of his own impious actions.”
Such are the words of the saintly elder. And I shall endeavour to state the remainder of their mystical system, which runs out to great length, in brief compass, and to bring to the light what has for a long time been concealed. For in this way such things will become easily susceptible of exposure by all.
Source: Adversus haereses (New Advent)