John Chrysostom

"But if any man say unto you, This hath been offered in sacrifice unto idols; eat not, for his sake that showed it." Thus it is not at all for any power that they have but as accursed, that he bids abstain from them. Neither then, as though they could injure you, fly from them, (for they have no strength;) nor yet, because they have no strength, indifferently partake: for it is the table of beings hostile and degraded. Wherefore he said, "eat not for his sake that showed it, and for conscience sake. …

Homily on 1 Corinthians 25 ↗

Theophylact of Ohrid

I command you to abstain not because food offered to idols is harmful, but for the sake of the one who declared that it was offered to idols, lest he suffer harm and think that Christians need not turn away from things pertaining to idols. And I do not teach abstaining from food offered to idols as though it were unclean and utterly foreign to our Lord: this is evident from the fact that "the earth is the Lord's, and the fullness thereof," that is, everything contained in it. …

Commentary on 1 Corinthians ↗