John Chrysostom

"Give no occasion of stumbling, either to Jews, or to Greeks, or to the Church of God:" i.e., give no handle to anyone: since in the case supposed, both thy brother is offended, and the Jew will the more hate and condemn thee, and the Gentile in like manner deride thee even as a gluttonous man and a hypocrite. Not only, however, should the brethren receive no hurt from us, but to the utmost of our power not even those that are without. …

Homily on 1 Corinthians 25 ↗

Basil of Caesarea

Do not be a stumbling block in any way to those you meet. Be cheerful, a lover of the brethren, gentle, humble. Do not demean the aim of hospitality by seeking extravagant foods. Be content with what is at hand.

Letter 42

Theophylact of Ohrid

That is, do not give anyone any occasion for reproach. And this will be the case when we do not cause offense to either Jew or Greek, and still less to the brethren, for they are the "church of God." Take note. He stated the most important thing at the end: Christians ought to attract others to the faith as well, rather than persecuting even the brethren; and by them he means all those who were scandalized by their eating of food offered to idols.

Commentary on 1 Corinthians ↗