Nicene and Post-Nicene Fathers, Vol. II:
City of God: Chapter 33

Chapter 33.—That Only Through the Christian Religion Could the Deceit of Malign Spirits, Who Rejoice in the Errors of Men, Have Been Manifested.

This, the only true religion, has alone been able to manifest that the gods of the nations are most impure demons, who desire to be thought gods, availing themselves of the names of certain defunct souls, or the appearance of mundane creatures, and with proud impurity rejoicing in things most base and infamous, as though in divine honors, and envying human souls their conversion to the true God.  From whose most cruel and most impious dominion a man is liberated when he believes on Him who has afforded an example of humility, following which men may rise as great as was that pride by which they fell.  Hence are not only those gods, concerning whom we have already spoken much, and many others belonging to different nations and lands, but also those of whom we are now treating, who have been selected as it were into the senate of the gods,—selected, however, on account of the notoriousness of their crimes, not on account of the dignity of their virtues,—whose sacred things Varro attempts to refer to certain natural reasons, seeking to make base things honorable, but cannot find how to square and agree with these reasons, because these are not the causes of those rites, which he thinks, or rather wishes to be thought to be so.  For had not only these, but also all others of this kind, been real causes, even though they had nothing to do with the true God and eternal life, which is to be sought in religion, they would, by affording some sort of reason drawn from the nature of things, have mitigated in some degree that offence which was occasioned by some turpitude or absurdity in the sacred rites, which was not understood.  This he attempted to do in respect to certain fables of the theatres, or mysteries of the shrines; but he did not acquit the theatres of likeness to the shrines, but rather condemned the shrines for likeness to the theatres.  However, he in some way made the attempt to soothe the feelings shocked by horrible things, by rendering what he would have to be natural interpretations.