John Chrysostom

"For that which the Gentiles sacrifice," saith he, "they sacrifice to demons, and not to God." Do not then run to the contrary things. For neither if thou wert a king's son, and having the privilege of thy father's table, shouldest leave it and choose to partake of the table of the condemned and the prisoners in the dungeon, would thy father permit it, but with great vehemence he would withdraw thee; not as though the table could harm thee, but because it disgraces thy nobility and the royal table. …

Homily on 1 Corinthians 24 ↗

Theophylact of Ohrid

So, do not resort to the enemies of your Master. For if you had left the royal table and gone over to the table of the condemned, you would undoubtedly have sinned, not because it harmed you or benefited you, but because your action would have appeared as an insult to the royal table.

Commentary on 1 Corinthians ↗

Justin Martyr

For the truth shall be spoken; since of old these evil demons, effecting apparitions of themselves, both defiled women and corrupted boys, and showed such fearful sights to men, that those who did not use their reason in judging of the actions that were done, were struck with terror; and being carried away by fear, and not knowing that these were demons, they called them gods, and gave to each the name which each of the demons chose for himself.

The First Apology, Chapter V ↗