23 Looking at it one way, you could say, "Anything goes. Because of God's immense generosity and grace, we don't have to dissect and scrutinize every action to see if it will pass muster." But the point is not to just get by. 25 With that as a base to work from, common sense can take you the rest of the way. Eat anything sold at the butcher shop, for instance; you don't have to run an "idolatry test" on every item. 26 "The earth," after all, "is God's, and everything in it." That "everything" certainly includes the leg of lamb in the butcher shop. 27 If a nonbeliever invites you to dinner and you feel like going, go ahead and enjoy yourself; eat everything placed before you. It would be both bad manners and bad spirituality to cross-examine your host on the ethical purity of each course as it is served. 28 On the other hand, if he goes out of his way to tell you that this or that was sacrificed to god or goddess so-and-so, you should pass. Even though you may be indifferent as to where it came from, he isn't, and you don't want to send mixed messages to him about who you are worshiping. 29 But, except for these special cases, I'm not going to walk around on eggshells worrying about what small-minded people might say; I'm going to stride free and easy, knowing what our large-minded Master has already said.
Matthew Henry's Commentary on 1 Corinthians 10:23-29
Commentary on 1 Corinthians 10:23-33
(Read 1 Corinthians 10:23-33)
There were cases wherein Christians might eat what had been offered to idols, without sin. Such as when the flesh was sold in the market as common food, for the priest to whom it had been given. But a Christian must not merely consider what is lawful, but what is expedient, and to edify others. Christianity by no means forbids the common offices of kindness, or allows uncourteous behaviour to any, however they may differ from us in religious sentiments or practices. But this is not to be understood of religious festivals, partaking in idolatrous worship. According to this advice of the apostle, Christians should take care not to use their liberty to the hurt of others, or to their own reproach. In eating and drinking, and in all we do, we should aim at the glory of God, at pleasing and honouring him. This is the great end of all religion, and directs us where express rules are wanting. A holy, peaceable, and benevolent spirit, will disarm the greatest enemies.