Isaiah 65:4

But what is read in the Septuagint, which is not found in Hebrew, is to be understood in the sense that, according to the letter and the spirit, demons do not exist, because they have already fallen from God, who truly is. Nor do heretical sects, which hold no truth, but pass away and perish like shadows. Hence Esther also speaks to the Lord: Do not give your inheritance to those who do not exist. And the saint prays in the psalm: Forgive me, so that I may be refreshed before I depart and no longer exist (Ps. XXXVIII, 14). For whoever, while living in this body, has not obtained the forgiveness of sins, and thus departs from life, perishes to God and ceases to exist, although they may continue to exist in punishment. … We must understand fury, forgetfulness, anger, repentance in God in the same way as we understand feet, hands, eyes, ears, and other bodily members which are said to belong to an incorporeal and invisible God. Not in the sense that these perturbations are open to Him, Who, by His gift of grace, extinguishes them in us, but in the sense that we understand by our words the affection of God toward us. For anger is not defined in God as it is in men, who find its material in our vices rather than in the will of the Lord, Who will heap His anger on us on the day of wrath and of the revelation of His just judgment, to burn up our thistles, thorns, and tares, which we have brought forth instead of the seed of God, and also the wood, hay, and stubble which we have built on the foundation of Paul (I Cor. 3). We read of this perpetual fire in the song of Moses: A fire is kindled in my anger, and shall burn unto the lowest hell. It shall consume the earth and its produce, and shall burn the foundations of the mountains, and my arrows shall pierce them (Deut. XXXII, 22). The meaning of this testimony is that the fire of God's wrath always burns against sinners and pursues them even to the depths of hell.

(Verses 4, 5.) Those who dwell in tombs and sleep in the temples of idols, who eat pork meat and unclean broth from their vessels, who say, 'Go away from me, do not come near me, for you are unclean.' LXX: They sleep in tombs and caves because of the nightmares, those who eat pork meat and the broth of sacrifices, all their vessels are profane. They say, 'Go far away from me, do not come near me, for I am clean.' There was nothing of sacrilege that the people of Israel would omit, not only sacrificing in gardens and burning incense on bricks, but also sitting or dwelling in tombs, and sleeping in the temples of idols, where they used to lie down on the skins of sacrificial animals to learn the future in dreams. This error is celebrated today in the temple of Aesculapius and in many other ethnic cults, which are nothing more than the tombs of the dead. They were not satisfied with this limit of impiety, but they also feasted on the flesh of pigs, which was prohibited by law, and they devoured yesterday's food, which the Greeks call 'ἕωλον', with greedy mouths (Leviticus 12). As a result, they and their vessels were unclean, and their audacity and arrogance grew daily to such an extent that anyone who did not share their error was considered unclean, and they would avoid coming into contact with them, just as the Samaritans and Jews do to us, and all heretics, like those that recently sprouted under the brainy master in Gaul, who veer away from the basilicas of the martyrs and flee from us, who perform prayers there in the customary manner, as if we were unclean. However, it is not they themselves who do this so much as the demons dwelling within them, not enduring the strength and punishments of the holy ashes. But who among the heretics does not rest in memories, does not sleep in the dens of the masters? What kind of people were Marcion and Valentinus, and more recently Eunomius, who, contesting the impurity of their mind with leprous flesh, abandon the light of the Holy Spirit and dwell in the darkness of the devil, and love the caves which Jeremiah condemns in mystical language: 'My inheritance has become to me like a cave of hyenas' (Jeremiah 12:8), which our people call a wild beast, as this animal always pursues carcasses and lives on the juice and pus of dead bodies. Against these, who dwell in caves, and Abacuc spoke with a lamentable voice, saying:…